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Volkswagens most efficient
Golf: The 77TDI is released in Australia
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Volkswagen
15th November, 2009
 The
new Golf range now features the most fuel efficient model in the Volkswagen
range with the addition of the new 1.6-litre diesel Golf.
Powered by
a sophisticated and efficient new diesel engine, the five-speed manual Golf
77TDI can cover 100km with 4.9-litres on the ADR 81/02 combined cycle. In
highway running consumption drops to just 4.3-litres per 100km. With a
potential range of well over 1100km, the new diesel Golf not only delivers
its occupants in comfort and safety to their destination but at minimal
expense.
The sixth generation of the Golf establishes an elegant new
design direction in the evolution of the iconic model.
In conceiving
the interior for the new Golf, Volkswagen’s designers unashamedly set
themselves the target of defining new benchmarks in quality in this class.
This goal extends to all aspects, from ergonomics, through the feel and look
of the materials used to the overall refinement within the cabin.
The
new interior look is combined with advances made by Volkswagen engineers in
reducing wind noise, including a completely new design of door and window
seals, a new sounddamping inter-layer within the laminated windscreen and a
new engine mounting system. The result is the quietest Golf yet produced.
 The
new 1.6-litre diesel, shares the same technology as the 2.0-litre diesel
(103TDI) with 16-valves and common rail fuel injection. It produces peak
power of 77kW at 4400rpm, while maximum torque of 250Nm is delivered between
1500-2500rpm. Fitted with a standard DPF (diesel particulate filter) to
reduce particulate emissions, this new engine is not only one of the most
efficient but also one of the cleanest diesels available.
Two
transmissions are on offer, a five-speed manual and a seven-speed DSG. The
seven-speed DSG transmission uses a pair of dry clutches (as opposed to the
wet ones in the six-speed version) to improve fuel efficiency and
performance. The pair of dry, organic bonded friction linings do not require
cooling, making the drivetrain more efficient through the extra gear ratio
and the fact that less power is required for the gear selection and clutch
servo system. Measuring only 369 mm in length and weighing only 79 kg,
including the dual-mass f lywheel, the gearbox is remarkably compact.
In adopting seven-speeds, Volkswagen engineers were able to lower first
g ear to improve acceleration f rom a stand still. By contrast seventh gear
has been raised to act as an overdrive function making it ideal for motorway
driving with the additional effect of further improving economy and comfort
levels.
The lubrication circuits are divided into two to maintain the
purity of the oil. As with a conventional manual gearbox, one of the
circuits is used for cooling and lubrication of the gear teeth, the second
feeds oil to the gear actuators. Since the clutch does not require cooling
the quantity of oil has been reduced from 7 litres in the six-speed DSG
gearbox to only 1.7 litres in the new seven-speed system.
The Golf
uses proven MacPherson strut-type front suspension to offer direct steering
feedback, strong axle rigidity under cornering loads and minimal body roll.
Ride and handling benefit from the car’s clever mounting concept for the
lower wishbone with separate mountings for spring and damper on the
suspension strut tower, including a lightweight twin-sleeve damper unit and
optimised spring rates.
The previous Golf’s completely new four-link
rear suspension system was a major stride forwards for this market segment
in terms of providing the optimum combination of handling dynamics and ride
comfort.
The compact four-link layout features three lateral control
arms – the spring mounting, the track rod and the upper control arm – and a
trailing link at each wheel. Suspension assemblies are attached by way of a
rear-axle subframe and, as at the front, rubber-and-metal mountings that are
soft in torsion but stiff radially are used to ensure that the anti-roll bar
responds immediately and suppresses body roll effectively. This combines
accurate handling with good ride and low road noise levels.
The
spring and damper on each side are located separately; the spring bears
directly on the trailing link and the damper unit is attached to the wheel
hub assembly. The suspension geometry on the compression stroke generates a
toe steering effect that maintains neutral behaviour or slight understeer in
all driving and load-carrying situations.
Among the benefits of the
almost neutral layout are excellent straight-running stability
characteristics on highly uneven road surfaces and minimised tyre wear.
The Golf uses a third generation electro-mechanical power steering system
(EPS) which is able to vary the feel of the steering wheel to suit the speed
and driving situation: firm and direct when driving hard, effortless at
parking speeds.
Other advantages of the system include its mild
self-centering action, its ability to compensate for different driving
hazards, like crosswinds and steep road cambers, and a beneficial effect on
fuel economy.
 The
Golf features a sophisticated braking system, with ABS and ESP (Electronic
Stabilisation Programme) as standard across the range.
On the passive
side, there is a further perfected safety body (including additional
reinforcement in the door area and optimized pedestrian protection), seven
airbags including a knee airbag on the driver’s side and a patented safety
optimised head restraint system for driver and front passenger.
Pricing for entry-level diesel the Golf 77TDI starts at $28,690* for the
five-speed manual, while the 7-speed DSG variant is priced from $31,190*.
* Prices are manufacturer list prices only, for the drive away price
please contact your local authorised Volkswagen dealer.
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