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Subaru Impreza 2.0i-L
Subaru Impreza 2.0i-S
Subaru Impreza 2.0i
Subaru Impreza 2.0i
Subaru Impreza 2.0i-S
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Subaru Impreza MY12 arrives
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27th February, 2012
Subaru’s fourth generation Symmetrical All-Wheel Drive Impreza has arrived
in Australia to freshen up Subaru's small car offering.
Both hatch and sedan offer improvements in fuel efficiency and emissions, and introduce new features including:
- Fuel-saving Auto Start Stop
- New generation horizontally opposed Boxer engine
- Interactive Multi-Function Display computer options
- Choice of Lineartronic™ Continuously Variable Transmission (CVT) and six-speed manual.
The new Subaru Impreza is priced from $23,990* (MLP)* for the 2.0i manual sedan and hatch.
Impreza’s spacious cabin, typical Subaru interior trim and stylish exterior design combine with technological advances
to present an improved package for the well established Japanese manufacturer.
New Impreza is the most efficient generation of Subaru’s small car to date – making a strong case to build on the
sales achievements of the third generation version, itself the best-selling small Subaru to date.
Impreza with CVT consumes 6.8 litres of fuel per 100 kilometres in the combined cycle, an improvement over the
superseded Impreza automatic.
The manual consumes 7.1 l/100 km (combined), which is also an improvement over the outgoing model.
Emission reductions are even more impressive – Impreza with CVT produces 157 grammes of CO2 per km, 24 per cent ahead
of the superseded four-speed automatic. The manual produces 164 g/km – a 21 per cent improvement.
Inside, soft touch surfaces, high-grade switchgear and generous occupant space distinguish Impreza, which also offers
the option of a premium Multi-Function Display, with a vast array of information at the driver’s fingertips.
The new Subaru Impreza line-up comprises:
- Impreza 2.0i – with the choice of Lineartronic™ CVT or six-speed manual transmission, Auto Start Stop, paddle shift
(CVT-only), steering wheel audio and cruise controls, climate control air conditioning, Bluetooth®* wireless technology,
USB connection, Multi-Function Display (fuel efficiency, temperature and clock), body coloured exterior rear-view mirrors
and door handles.
- Impreza 2.0i-L – Adds premium Multi-Function Display with reversing camera, dual zone climate control air
conditioning, 16-inch alloy wheels, centre console box with sliding armrest, leather trim steering wheel/gear shift, rear
privacy glass and front fog lights.
- Impreza 2.0i-S – Adds (to 2.0i-L specification): upgraded speedometer, upholstery and trim; alloy pedals, chrome-type
front fog light surrounds, chrome-type door handle inserts, indicators in exterior rear-view mirrors, chrome-type fog
light surround and rear garnish (sedan-only), side skirts and 17-inch alloy wheels.
Two option packs are available.
- Impreza 2.0i-L option pack – Adds factory fitted satellite navigation and electric sunroof.
- Impreza 2.0i-S option pack – Adds factory fitted satellite navigation, electric sunroof, leather trim and power
driver’s seat
Nick Senior, Managing Director, Subaru Australia, said: “New Impreza will attract new customers to the brand with
its focus on improved exterior styling and interior design.”
“Additionally, it’s more fuel efficient, environmentally friendly and better equipped.”
“But these new customers will come along with our loyal Impreza owners. We’ve sold more than 144,000 Imprezas and
the customers are a loyal bunch who will openly embrace the multitude of changes.”
“Impreza sends the strongest possible message that Subaru’s new design direction is a winner on so many fronts,
from technology to quality, comfort, efficiency and style.”
“Combine those factors with Subaru’s All-Wheel Drive DNA, safety, durability, engineering and retained value, and
you can see that Subaru is firmly committed to growth combined with quality products.”
“Impreza appeals to people with both an urban lifestyle and a spirit of adventure. Factor in the choice of sedan
and hatch variants with advanced new engine and transmission options, and you emerge with a truly modern, stylish and
economical package.”
“Fuji Heavy Industries have done a great job on producing a cabin with panoramic views and a sense of space housed
in its small car dimensions. This is a fantastic feat when you consider the level of structural strength and safety
inherent in Impreza’s design.”
“The quality of interior materials, including the soft-touch dashboard treatment, reflects FHI’s commitment to
raising the bar.”
“The designers are also encouraging greater awareness of economical driving styles via the information shown in the
Multi-Function Display, particularly the premium version in Impreza 2.0i-L and 2.0i-S.”
Among the Subaru Impreza highlights:
- Auto Start Stop – fuel saving feature. Engine restarts in as little as 0.35 seconds
- Fuel efficient and clean new petrol Subaru – 6.8 litres per 100 kilometres and 157 grammes of CO2 per km, combined
cycle (CVT)
- Lineartronic™ CVT – paddle shift, smoother and 10 per cent more fuel efficient than superseded four-speed
- Six-speed manual – short stroke, easy shift, producing great efficiency
New third generation FB Boxer engine:
- 110 Kilowatts/6,200 rpm and 196 Newtonmetres/4,200 rpm
- Significant fuel efficiency benefits – long-stroke design delivers approximately 10 per cent improvement due to
engine changes alone
- Dual Active Valve Control System (AVCS) – performance and efficiency gains
- 18 per cent reduction in piston weight
- 20 per cent reduction in connecting rod weight
- Major low and mid-range torque improvements
- EURO 5 compliant – cleanest current Subaru petrol engine
Exterior
- Body approximately 10 kg lighter – bending stiffness increased by around 25 per cent
- Stylish hawk eye headlights – great light spread
Interior
- Multi-Function Display – wealth of driver information at fingertips
- Spacious, widebody cabin - extended wheelbase
- Ultra low Noise, Vibration and Harshness (NVH) – enhances passenger comfort
- High quality materials – fine dashboard and door trim texture
- Great field of vision – significant safety benefit
- Huge cargo area – child restraints attach to rear seat backs, with no intrusion
- SatNav option in 2.0i-L and 2.0i-S - includes SMS text to speech for mobile phones with MAP (Message Access Profile)
and voice commands, multiple entertainment options and reverse camera images
Safety
- Five star ANCAP rating
- Seven airbags - including driver’s knee SRS airbag
- Reversing camera – standard in 2.0i-L and 2.0i-S
High level safety continues to be standard on Subaru – all Imprezas get a five-star rating for occupant safety from
the Australasian New Car Assessment Programme (ANCAP), plus an Acceptable rating for pedestrian safety.
Every model has seven airbags, including a driver’s knee SRS airbag.
The new Impreza 2.0i-L and 2.0i-S add a reversing camera.
Impreza’s body and chassis structure are strengthened at critical points to reduce the likelihood of occupant injury
in heavy impacts. Together with precise steering, this delivers a sense of stability.
Impreza’s stylish hexagonal grille and hawk eye-style headlights distinguish it on-road.
Subaru’s new design direction, reflected in Impreza, includes excellent field of vision from the cabin, aided by
pillars located further forward and door mounted exterior rear-view mirrors, reducing blind spots.
SUBARU IMPREZA IN DETAIL EXTERIOR
Impreza’s aerodynamic design is confirmed by its 0.306 (sedan) 0.329 (hatch) coefficient of drag (cd) rating.
Attention to aerodynamic detail includes fog light edges that aid air flow along the side of the car.
Also helping aerodynamics and fuel efficiency is the inclusion of a large cover under the car, and other under-floor
aerodynamic items, such as mudguards and air flaps ahead of the rear wheels.
Impreza’s rear combination lights are designed to provide both depth and wide light dispersal.
Washer nozzles have been repositioned from the bonnet to the windscreen base, ensuring maximum coverage of the large
sweep area.
A minimal gap between the bonnet and the windscreen contributes to Impreza’s sleek appearance.
The large aerodynamic exterior rear-view mirrors are door mounted to prevent obstruction of the field of vision.
The hatch rear spoiler is integrated into the cargo door, complementing the seamless, sophisticated design.
The rear gate structure is optimised for light weight, with minimum effort needed for opening and closing.
Impreza 2.0i-L and 2.0i-S are also available with an option pack that includes a sunroof with a 310 mm opening. Its
sturdy frame maintains the same roof safety level as cars without sunroofs.
COLOURS
- Ice silver metallic
- Satin white pearl
- Dark grey metallic
- Obsidian black pearl
- Camellia red pearl
- Sky blue metallic
- Deep cherry pearl
- Marine blue pearl
- Sage green metallic
INTERIOR
Impreza offers a spacious, quiet, relaxing cabin and large cargo area in both sedan and hatch variants.
The fine texture and feel of dashboard and door trim materials is made even softer by use of a thick layer of
under-foam, which also benefits the visual appearance.
The extended wheelbase enables larger front and rear seating areas, while new design internal door structure has
allowed greater width. The result: more elbow and shoulder room, and greater rear leg room.
Better feel seat padding, noise reducing materials and a rear seat that prevents pitching and rolling of occupants,
combine to produce a comfortable ride. Front seat head restraints are adjustable both horizontally and vertically.
Back rests are higher, providing support to the top of the occupant’s back, providing a more secure feeling.
The rear seat backs have a pronounced inverted curve. Combined with the flatter floor and large space under the front
seats, this allows generous legroom.
To help the driver’s rear view, adjustable rear seat head restraints are used.
For the convenience of parents fitting baby and child seats, the tether anchor points are integrated in the back of
the seats, meaning no intrusion into the cargo area.
The spacious feel also benefits from the A-pillar being positioned away from the front occupants, aiding visibility.
Integration of the triangular quarter glass in the front door - instead of the body - benefits field of vision thanks
to a narrower pillar.
Also aiding cabin space is dashboard design, in which the air vent ducts and heater unit are positioned to enable a
low top surface.
The door shoulder line is designed to be low too, contributing to the spaciousness.
The cabin features multiple storage areas including a glovebox that can fit the equivalent of 16 compact discs, and a
centre tray fitting nine CDs. The sliding console box between the front seats in Impreza 2.0i-L and 2.0i-S extends up to
100 mm. It has capacity for 13 CDs, USB and AUX terminals, and 12 Volt power. In front of the console is a dual cup
holder, while front doors also have space for a bottle.
In the back, the centre armrest has dual cup holders.
The 340 litre hatch cargo area can carry up to three golf bags, while the sedan’s 460 litre boot can carry four golf
bags.
The hatch security blind can conveniently be stored under the cargo area floor.
To reduce noise, insulators have been added close to the toe boards and the transmission tunnel, boosting sound
absorption.
Lineartronic™ CVT-equipped Imprezas also add a large high-performance noise reduction cover.
Impreza 2.0i-L and 2.0i-S feature dual zone automatic air conditioning, with shutters on the centre vents. The system
enables different temperatures to be set by the driver and front seat passenger for either side of the cabin.
Impreza cabin entry and exit is made easy through wide-opening doors and low sill design.
MULTI-FUNCTION DISPLAY (MFD)
The Impreza 2.0i MFD shows outside air temperature, fuel efficiency, time, seatbelt warning and airbag indicator. The
fuel efficiency indicator includes current and average efficiency, and distance travelled. If the driver prefers, it can
also be blanked out. It can also aid efficiency by notifying continuous travel time and average speed.
Linked to Auto Start Stop, it shows length of time the engine is stopped and cumulative time stopped.
The premium MFD in Impreza 2.0i-L and 2.0i-S is reminiscent of a high-tech computer game. It displays a comprehensive
range of information and can help contribute to better fuel efficiency.
Drivers can use eco-gauge and eco-guide screens to monitor the fuel efficiency of their driving style. On completing
their journey, they can see an on-screen evaluation of their day’s driving – and even compare with a previous drive.
The MFD is linked to Auto Start Stop to show engine stop time and the amount of fuel conserved while stopped.
It includes a steering wheel switch that enables remote function selection without the need to take a hand off the
wheel.
The premium MFD also shows reverse camera images, unless optional satellite navigation (SatNav) is fitted, in which
case the images appear on the SatNav screen.
Among the displays are:
- Information – including journey time, temperature and fuel saving with Auto Start Stop
- Safety – including a representation of Vehicle Dynamics Control
- Self-check – including maintenance
- Warning – to alert the driver if a problem arises
- Seatbelt, air conditioner, airbag information
Metallic dial highlights underline Impreza’s quality interior treatment. A central LCD monitor provides the
information most crucial in driving, including current gear and fuel gauge – meaning minimal distraction from safe, fun
driving.
Impreza has a tilt and telescopic adjustable steering wheel. The tilt range is 42 mm and the telescopic range 40
mm.
The steering wheel has switches for audio and cruise control, and Impreza 2.0i-L and 2.0i-S add an MFD switch.
All Lineartonic™ CVT Imprezas feature steering wheel paddle shifters.
Impreza 2.0i-S features alloy pedals.
FHI designers have added insulating material to the engine bay, reducing the amount of heat and noise entering the
cabin. This has the added benefit of aiding fuel efficiency, as air conditioning load is reduced, particularly when
idling.
ENTERTAINMENT
Impreza’s audio system has a CD player with AM/FM tuner and six speakers including a pair of mid to high-range
speakers in the instrument panel, offering excellent reproduction of a broad range of sounds, from low to high-end.
The system offers iPod***, Bluetooth wireless technology and USB connectivity.
OPTION PACK
Impreza 2.0i-L and 2.0i-S are available with option packages that include an audio system incorporated with
factory-fitted SatNav, with convenient web download/upload of updated maps available via SD card.
The 6.1 inch screen system is MP3/MP4/WMA/WMV/DiVix/iPod/Bluetooth/USB and digital media compatible.
It includes SMS functionality, with text to speech, for mobile phones with MAP (Message Access Profile), meaning the
system can automatically read text messages to you when they arrive.
The system can intuitively perform several operations in response to voice commands while driving, including searching
for addresses or points of interest, initiating a phone call to people in the address book and performing album or artist
searches.
The Bluetooth functionality includes wireless interaction (audio streaming) with compatible portable music players.
The system includes a centre console USB port and music playback can be controlled from either the screen or steering
wheel switches.
ENGINEERING
ENGINE
Impreza’s new generation 2.0 litre four cylinder horizontally opposed FB engine retains the Boxer’s proven benefits
while enhancing fuel efficiency and performance, with a focus on torque in the low and mid-speed ranges.
It produces 110 Kilowatts of power at 6,200 rpm and 196 Newtonmetres of torque at 4,200 rpm.
The new engine complies with strict EURO5 emission regulations and runs on standard 91RON unleaded fuel.
It has a stroke of 90 mm and bore of 84 mm, compared to 75 mm and 92 mm respectively in the superseded Boxer engine.
New features include a timing chain and intake and exhaust dual Active Valve Control System (AVCS).
By improving combustion efficiency and radically lowering friction, FHI has boosted fuel efficiency and reduced
emissions for an overall cleaner system.
Combustion chambers are more compact, a cooled Exhaust Gas Regeneration (EGR) design adopted, the shapes of intake
ports and valves enhanced, and injector positions optimised.
Lighter weight pistons, connecting rods and other critical drive components are used.
Friction is reduced by overhauling the cooling system and adding roller rockers to the moving valve train system.
Engine measures alone represent an improvement in fuel efficiency of approximately 10 per cent.
Other factors including the lighter body, improved aerodynamics, new Lineartronic™ CVT and the Auto Start Stop
function, push the fuel efficiency gains even higher.
Low and mid-range torque – most frequently used in everyday driving – is improved by extending the piston stroke and
adopting dual AVCS. Overall engine response is enhanced.
The catalyst position is optimised to meet the EURO5 emission standard, without the need of a two-stage air system.
CYLINDERS
The FB engine has a smaller bore and longer stroke compared to the superseded EJ. Its bore/stroke ratio is now
comparable to other engines rating highly for fuel efficiency.
Low tension piston rings combined with lower piston friction have aided fuel efficiency.
PISTONS
An 18 per cent reduction in piston weight is achieved due to reduced bore size.
Combustion chambers are more compact due to both bore diameter reduction and smaller valve clipping angles. As fuel
can be evenly distributed inside the chamber, much more effective combustion occurs.
Surface area of combustion chambers is now smaller, reducing heat loss. Knocking is also less likely, as combustion
occurs in a shorter time.
CONNECTING RODS
A 20 per cent reduction in connecting rod weight is achieved due to bore size reduction. Diagonally split connecting
rods mean engine width increase normally associated with longer piston strokes is kept to a minimum.
INTAKE BOOTS
To improve low and mid-range torque, the capacity and position of small and large resonators are optimised. Weight is
also reduced by eliminating the large intake chambers of the superseded EJ engine.
EGR COOLING SYSTEM
The EGR system is now capable of cooling gas. As a larger amount of gas can be redirected, fuel injection volumes can
be kept low, for fuel efficiency and emission gains. As combustion temperatures are also reduced, knocking is less likely
and injecting timing can be advanced, limiting the possibility of combustion fluctuation. Cooling is achieved by using
the pipe that returns coolant from both banks to the radiator – without the need for extra components.
MANIFOLD
Overall weight is reduced through use of a plastic intake manifold. Airflow is improved and the system tuned for
higher output.
TUMBLE GENERATOR VALVES (TGV)
Tumble Generator Valves are introduced to improve combustion efficiency by making vortices within the combustion
chambers. Port and valve shapes were optimised using CAE analytic techniques. This enhances output by limiting pressure
loss upon valve opening and closing, while simultaneously generating tumble flow upon valve closure, boosting combustion
and exhaust efficiency. The overall design is compact and simple, reducing weight.
PORTS
Partitions in the intake ports maximise the TGV effect. Fuel efficiency is further enhanced by adding throttle
sections to increase flow speed. Input port design is modified to enhance output performance.
INJECTORS
Injectors are mounted directly on the cylinder heads, reducing the amount of vaporised fuel sticking to the cylinder
head surfaces. This aids fuel efficiency and exhaust performance.
INTAKE AND EXHAUST AVCS
The dual AVCS makes the FB engine much more responsive to driving conditions, producing output, fuel efficiency and
exhaust benefits. The intake AVCS introduces a mechanical intermediate locking mechanism, significantly increasing
exhaust performance at engine startup. A spool valve in integrated into the AVCS. By making this independent of the oil
control solenoid, FHI has achieved a simpler design. Lower pressure loss and better isometry have produced improvements
in output performance. Heat loss from the exhaust before it reaches the front catalyst is minimised through use of
shorter branch pipes, reduced volume and surface area at converging sections. The catalyst is heated quickly, maximising
performance of exhaust gas purification immediately after engine start-up. Due to the position of the air-fuel sensor,
cleaner exhaust gas is achieved, together with accuracy of gas concentration sensing.
BOTTOM BYPASS CHANNEL
To promote faster engine warming at startup, a bottom bypass channel is added. Oil temperature can be rapidly
increased by circulating it around a short path, passing through air in the engine’s bottom bypass. Friction between
moving parts is quickly reduced, enhancing fuel efficiency.
ISOLATED COOLING CHANNELS
Distribution of coolant to the blocks and heads is optimised through new cooling circuits. In the engine block,
reduced flow volume, retention of higher oil temperatures at cylinder block surfaces and lower piston friction combine
to improve fuel efficiency. At the cylinder heads, increased coolant flow volume and cooling efficiency enhance cooling
performance, particularly around the spark plugs. This raises the knock limit, improving output performance and fuel
efficiency.
ROLLER ROCKETS
Use of roller rockers for the valve operating system reduces friction and improves fuel efficiency.
HIGH-STRENGTH CHAINS
Chain strength is enhanced and the chainplate profile modified, reducing the area of contact with the guides and
lowering friction.
OIL PUMP
To help reduce weight, the oil pump is built into the chain cover. As oil requirements are lower with the dual AVCS,
oil pump relief pressure is reduced. The relief valve features a two-stage design that, by eliminating unnecessary pump
operation, produces lower friction.
CHARGING CONTROL SYSTEM (LINKED TO AUTO START STOP)
The new charging control system comprises a current sensor, battery temperature sensor and an alternator. When the
engine is idling or the car travelling at a fixed speed, it reduces the generator voltage. When the car is decelerating,
it raises generator voltage. This reduces engine load overall, boosting efficiency.
LEVEL SWITCH
For ease of maintenance and servicing, the engine has a dedicated oil level switch. This prevents the engine from
being seriously or permanently damaged. A warning light informs the driver if the oil drops to a specific level.
MOUNTS
Fluid filled engine mounts are used, for efficient vibration suppression, which also contributes to the comfortable
ride.
FUEL TANK
The fuel tank canister is located outside the cabin, freeing up occupant space and also removing the need for a cover.
The fuel tank itself is approximately 1 kg lighter.
FUEL CONSUMPTION
|
Engine |
Combined (l/100 km)/ CO2 (g/km) |
Urban |
Extra urban |
|
Impreza 2.0i six-speed manual |
7.1/164 |
9.2/213 |
5.9/137 |
|
Impreza 2.0i Lineartronic™ CVT |
6.8/157 |
8.9/205 |
5.6/130 |
AUTO START STOP
Auto Start Stop stops the engine when the vehicle is temporarily stationary, such as at traffic lights. It reduces
fuel consumption.
In Lineartronic™ CVT-equipped vehicles the engine stops 0.5 seconds after the car halts. When the brake is released,
the engine starts after 0.35 seconds.
In six-speed manual Impreza, the engines also stops 0.5 seconds after the car halts, when the car is in neutral, or
the clutch released. It restarts 0.35 seconds after the clutch is pressed.
FHI studies indicate cars may be stopped up to 30 per cent of travel time, particularly in rush hour.
An “off” button enables Auto Start Stop to be turned off – the default is “on”.
A special starter and ICR relay are among the components supporting Auto Start Stop. The ICR relay stabilises power
supply during idle reduction, so instruments and displays do not flicker.
The starter in Lineatronic™ CVT vehicles features tandem solenoids. Independent solenoids control the motor and the
pinion gear connecting engine and motor rotation, ensuring rapid engine restart in as little as 0.35 seconds. An
electric pump supplies oil to the forward clutch’s hydraulic circuit while the engine is stopped. This minimises delay
between engine restart and vehicle motion, producing smoother driving.
During Auto Start Stop operation, the air conditioner, navigation and audio systems are all fed by the auxiliary power
supply.
Vehicles with Auto Start Stop are fitted with a long-life battery.
Hill Start Assist ensures Auto Start Stop operates safely on hills. On steep hills, the engine of manual transmission
Imprezas will not automatically stop.
To avoid wasting electrical energy, the car’s electric power steering is turned of whenever the engine is
automatically stopped.
The air conditioner includes a new sensor to ensure ideal conditions are maintained inside the cabin, while also
increasing fuel efficiency.
In extreme conditions such as very hot days, the engine will continue idling if the air conditioning, combined with
other systems demand, more power.
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TRANSMISSIONLINEARTRONIC™ CONTINUOUSLY VARIABLE TRANSMISSION
Impreza’s new Lineartronic™ CVT produces smoother driving, free of gearshift shock. Combined with optimised gear
ratios, it makes driving on winding roads, hills and other challenging or fun conditions a much more pleasant
experience. It produces a great balance between responsiveness and ride comfort.
A phenomenon of some earlier Continuously Variable Transmissions was the sensation of the engine accelerating faster
than the car. Impreza’s newest Lineartronic™ CVT produces smooth gearing and highly responsive acceleration, while
contributing significantly to fuel efficiency.
Impreza’s Lineartronic™ CVT is even more lightweight and compact than that featured on current Liberty and Outback.
Despite its compact size, it still features the reliable chain-type design, meaning a wide range of gear ratios are
covered for ideal fuel efficiency.
The unit offers a six-speed manual mode plus steering wheel paddle-shifters. This makes it instantly possible to find
the preferred ratio, a particular benefit during sporty, fun driving. If the paddle shift is operated while in “D”,
control temporarily returns to manual. When the system determines the car is travelling at a constant speed, it
automatically reverts to “D”.
Compared to Subaru’s superseded conventional four-speed automatic, Impreza’s Lineartronic™ CVT improves stand-start
acceleration and is quieter and more fuel efficient at higher speeds. It also offers wider ratio coverage than competitor
CVTs, conventional automatics and dual clutch transmissions.
The steel chain used on Impreza’s Lineartronic™ CVT has a smaller engagement diameter, meaning the same ratio coverage
can be achieved with smaller pulleys. The chain also has lower internal loss and better transfer efficiency over the
entire torque range. For example, in the overdrive range, where fuel efficiency benefits most, the transmission is
approximately 5.0 per cent more efficient than belt-type CVTs.
Suppression of friction loss makes the Lineartronic™ CVT 10 per cent more fuel efficient than the superseded
conventional four-speed unit.
Noise suppression is aided by adoption of a short-pitch chain, stiffer case and improved transmission cover
insulation.
TORQUE CONVERTER
Fuel efficiency and noise are reduced by use of a damper for the large lock-up range.
SIX-SPEED MANUAL TRANSMISSION
Impreza’s six-speed manual transmission is adopted from Liberty and contributes to great fuel efficiency combined with
smooth shifting, courtesy of the shorter stroke. There is less friction within the transmission, also boosting fuel
efficiency.
Among the changes are new low friction bearings, improved gear transfer efficiency, lower oil volume and addition of a
baffle plate.
Thrust bearings for reverse also reduce friction.
Specially designed lubrication channels help reduce friction and improve fuel efficiency.
Modifications to the synchro mechanism design have helped reduce stroke length and improve ease of operation.
SYMMETRICAL ALL-WHEEL DRIVE
Imprezas with Lineartronic™ CVT feature electronically controlled All-Wheel Drive that integrates a Multi-Plate
Transfer (MPT) to distribute torque to the rear wheels. Normal operation is 60:40 (front:rear) torque distribution.
However, the Transmission Control Unit (TCU) responds to driving conditions such as acceleration, hill ascent and
turning, to adjust front:rear torque distribution. When front wheel slippage is detected, the system increases the
torque being distributed to the rear wheels, ensuring optimum traction.
In manual transmission Imprezas, the All-Wheel Drive system combines a centre differential with a mechanical centre
viscous Limited Slip Differential (LSD), without electronic control. With torque distribution designed to maximise
traction, the system caters for the full range of driving styles. Traction is split 50:50 front:rear by the centre
differential. Whenever a difference in rotation speed of front and rear wheels occurs, the viscous LSD limits the
difference in the centre differential, helping ensure stable traction.
BODY AND SUSPENSION
Strategic stiffening of Impreza’s body combined with suspension calibration has produced highly responsive, linear
handling, yet impressive comfort.
As with all current Subarus, Impreza features ring-shaped reinforced frames around the passenger cabin for great
strength and safety benefits.
Subaru has continued use of its Dynamic Chassis Control Concept (DC3), producing great ride quality.
FHI says that by stiffening mounting points and surrounding areas, as well as components, suspension has evolved
from a separate system to a network of systems working together.
DC3 offers accurate, predictable response to steering, excellent ride comfort, superior steering stability and
comfortable ride that smoothly absorbs undulations.
Insulators are added to the toe boards and tunnel floor, maximising mechanical noise suppression.
INDEPENDENT STRUT SUSPENSION – FRONT
High response valves are used for the front suspension and top mount stiffness enhanced, ensuring responsiveness. A
rebound spring in the front strut reduces rebound in the inside wheels and prevents body lift during steering. The
amount of rolling is reduced and the tyres continue to grip the surface, with a more stable cornering stance – handling
in a nimble manner and making it easier to avoid hazards. Front stabiliser diameter is increased from 20 mm to 22 mm,
limiting roll and enhancing stability. The entire bushing is enclosed in a new clamp, with the twin effect of limiting
power loss due to bushing deformation and improving stabiliser mounting stiffness.
Increasing stiffness of the front arm mounting area has produced a highly linear steering response. The addition of
reinforcements around the engine mount helps to boost overall stiffness. It also reduces vertical engine vibration
transfer to the body, aiding ride comfort. A front support brace is added to connect the front cross member and rear
bushing section of the front arm. This reduces longitudinal engine vibration, enhancing steering stability and occupant
comfort.
DOUBLE WISHBONE - REAR
High response valves are introduced in the rear shock absorbers, contributing to overall responsiveness. Pillow ball
bushings are used to replace rubber lateral link bushings on the outer rear side of the lateral link.
Changes in toe are less likely due to poor road surfaces and other external forces, meaning directional stability is
significantly improved.
A rear stabiliser is added to prevent rolling and enhances occupant comfort.
Subframe bushing stiffness is also optimized for better operation and occupant comfort.
STEERING
Impreza has pinion assist type electric power steering, equating to a fuel efficiency boost of around 2.0 per cent,
without the need of an oil pump or tank in the engine compartment – saving both space and maintenance. The highly
refined motor control makes the steering feel natural, even compared to hydraulic systems. The steering is stiffer
overall.
SAFETYBODY AND COMPONENTS
Impreza offers a fantastic field of vision, with the A-pillar cross-section and side partition window designed to
reduce front and side blind spots.
Impreza’s body frame offers an extremely high level of impact absorption. From the front, sides or back, it can
withstand significant impact forces.
High tensile steel plates enhance body strength, yet enable a lightweight structure – a reduction of approximately
10 kg.
Reinforcement of strategic points on the chassis makes it more rigid and responsive to steering. The reinforced front
top mounts help boost steering response and occupant comfort, effectively moving the suspension before body flex can
occur.
Additional rear stiffeners ensure better rear frame resistance to twisting, enhancing steering tracking, while rear
seat vibration is suppressed for better passenger comfort.
Bending stiffness is improved by around 25 per cent.
Torque box reinforcement also benefits steering response, while the addition of triangular diagonal members boost
stiffness under transverse loads and contribute to better rear-wheel tracking.
Impreza’s aerodynamic wing mirrors are 20 per cent larger and positioned on the door, producing a better and sharper
field of vision.
The front bumper overhang is minimised, while maintaining impact absorption.
By reinforcing the sections joining bumper beams to the chassis, high level energy absorption is achieved in a small
space.
The toe board is thickened for added strength, protecting against rearward pedal movement in heavy frontal
collisions.
Impreza has a retractor brake pedal mechanism, reducing lower limb injury in heavy frontal collisions.
A collapse mechanism is built between the lower and middle jackets of the steering column, to prevent the steering
wheel being thrust into the cabin if the engine moves back in a heavy frontal collision. Also, a separation mechanism
is installed between the car body and the steering tilt bracket, minimising impact between steering wheel, steering
column and driver.
A reinforcing member at the base of the A-pillar strengthens the joint between the pillar and upper frame, ensuring
impact energy in frontal collisions is cleanly passed from frame to pillar.
High strength members are used on the vehicle sides, where there are few crushable zones. This helps structural
deformation in side collisions.
A large frame is also added to sunroof-equipped cars, ensuring the same safety performance as non-sunroof vehicles.
A double beam structure is used in the rear doors, helping limit panel deformation and optimizing occupant protection
in side collisions.
The rear of the chassis is designed so energy in offset collisions is evenly distributed left and right of the
diagonal cross members, helping minimise cabin deformation.
Door, rear quarter and centre pillar trim stiffness is optimised too.
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PEDESTRIAN PROTECTION
Impreza 2.0i-L and 2.0i-S have a reversing camera as standard equipment.
Shock absorber stays are removed, widening the space between the bonnet and frame to help reduce the effect of impact
on pedestrians.
Placing energy absorbing insulators inside the engine compartment also reduces the effect of impact energy.
In the front bumper, the energy-absorbing foam area is expanded and the bumper bracket centre lowered.
BRAKES
Impreza has four wheel disc brakes and Vehicle Dynamics Control as standard. Control logic is added for use in hazard
avoidance.
The longitudinal and transverse G sensors, together with the yaw rate sensor, are integrated into the VDC ECU. This
reduces VDC weight and boosts centre console space (where sensors were previously located).
The brakes produce great linear response, while Brake Assist delivers higher levels of brake force, further reducing
the chance of accidents.
Brake Assist is now a VDC-based system. It assesses the need for braking based on both the force and speed with which
the pedal is depressed.
There’s also a brake override system to correct driver error – if the driver panics in an emergency and applies both
accelerator and brake, the system gives priority to brakes.
VDC’s operational status is displayed on the range-topping MFD, keeping the driver constantly aware of the vehicle’s
status.
Combining a shorter brake hose with low expansion material means less pressure loss on brake application, for a more
responsive, stiffer feel.
The weight of several brake components is also minimised, including aluminium callipers replacing cast iron.
A spring-type pad return mechanism is added to front brake pads, reducing friction from brake drag and contributing to
better fuel economy.
All manual transmission Imprezas feature Hill Start Assist, which momentarily applies brakes when performing a
standing start on a hill.
Tyre rolling resistance is reduced for better fuel economy and producing braking performance almost identical on both
wet and dry surfaces.
HEADLIGHTS AND WIPERS
Speed-sensing intermittent windscreen wipers combined with multiple dispersal washer nozzles cover a broad windscreen
area. The washer fluid is sprayed before the wipers move, preventing windscreen scratching.
The wiper system maximises rigidity and vibration absorption to minimise operational noise.
The range of headlight illumination is maximised.
SEATS
Front seat stiffness is improved, with the structure catching the occupants head and body simultaneously if an impact
occurs.
An S-shaped hook connecting the seat frame and mat, is located inside the seatback and supports the occupant’s torso.
In a heavy collision, the S hook disengages, allowing the occupant to move backward, enabling the impact to be absorbed.
The head restraint moves forward relative to the torso, providing firm support.
Rear seat cushion shape is optimised and the position moved back, to lower impact effect in side collisions.
AIRBAGS
Impreza has dual front, side, curtain and driver’s knee SRS airbags – seven in total.
The dual front airbag structure is reduced in weight by 40 per cent.
Side airbag structure is also more compact and lightweight – a 50 per cent weight saving.
NOTE:
* Manufacturer's List Price (MLP) excludes dealer delivery fees and the numerous statutory
charges (commonly known as on-road costs). Additionally, please note that all prices, fees and charges are
subject to change without notice, as are the specifications.
** Depending upon the software in individual mobile telephones.
*** iPod is a registered trademark of Apple Computer Inc.
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