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Revised Audi TT focuses on efficiency for 2011

The Audi TT is set to benefit from a range of improvements this year to improve its looks and increase efficiency.

The upgraded 2.0-litre Turbo FSI petrol engine is the technological highlight in the latest range, employing Audi valvelift technology to effect improvements in power, torque and overall efficiency compared with the 200PS version it replaces. Delivering 211PS between 4,300rpm and 6,000rpm and a 350Nm torque peak between 1,600rpm and 4,200rpm, it enables the TT 2.0 TFSI with six-speed manual transmission to reach 62mph from rest in 6.1 seconds - 0.5 seconds more rapidly than its predecessor - and raises its top speed from 149mph to 152mph. Even more impressively, it boosts economy potential from 36.7mpg in the combined cycle test to 42.8mpg, and pares back CO2 output from 183g/km to 154g/km.

The Audi valvelift system adjusts the lift of the exhaust valves in two stages depending on need. This reduces flushing losses in the combustion chamber and also ensures that the optimal flow of the exhaust gas is directed to the turbocharger, which in turn ensures that torque is developed quickly. The combination of turbocharging and direct fuel injection also reduces the combustion chamber temperatures and the resulting tendency to knock. This allows a high compression ratio of 9.6:1, which improves efficiency.

New energy recuperation system
The gains made possible by this new technology are augmented by a recuperation system which recovers energy during braking and coasting phases in this latest generation TT, and which also extends to the 160PS 1.8-litre TFSI petrol engine that continues to power the TT Roadster and the 170PS 2.0-litre TDI unit used by the TT Coupe and Roadster.

A ground breaker in the sports car sector, the TT 2.0 TDI continues to set the efficiency standard, covering up to 53.3mpg according to the combined cycle test, which corresponds to only 139 grams of CO2/km. With 170PS and 350 Nm of torque - the latter available between 1,750 and 2,500 rpm - the high-tech common rail injection engine powers the TT to 62mph in 7.5 seconds and on to 140mph. The 2.0-litre TDI is mated to a manual transmission and quattro all-wheel drive. The quattro configuration provides substantially greater stability, traction and driving enjoyment, and is another unique selling point of the Audi TT in its class. It is also available in conjunction with the new 2.0-litre TFSI unit, and is a standard feature of the TTS and the TT RS.

A precise shifting six-speed manual transmission transfers power to the wheels regardless of the engine, with the S tronic dual clutch transmission available as an option for the new 2.0 TFSI. This transmission switches between its six gears with virtually no interruption to the supply of power either fully automatically or manually. Manual shifts can be made using the optional paddles on the steering wheel.

The much praised formula for an excellent compromise between comfort and handling agility in the TT - McPherson struts at the front and four-link trailing arms at the rear - continues as before. The Audi magnetic ride shock absorber system that offers even greater poise for TT models as an optional extra, and is fitted as standard to the TTS, has, however, undergone some additional development work. ‘Normal' mode now offers an even more finely judged balance between ride refinement and handling composure, and when the ‘Sport' mode is selected an even tauter and more focused handling bias is elicited.

New Sport button
Another new development that will please sporting drivers can also be incorporated at extra cost in conjunction with Audi magnetic ride. The Sport button, which has been a standard feature of the TT RS since launch and now becomes available as an option for all other models, allows the driver to alter the throttle pedal response (in manual versions), the degree of servo boost provided by the electromechanical steering and the engine note.

Subtle enhancements inside and out
Combining aluminium and steel content in a 58% to 42% ratio that favours optimal weight distribution, the ‘standard' version of the lightweight TT ‘hybrid' body now subtly incorporates a more striking front bumper design with deeper air intakes based on the look that was previously reserved for S line versions. New alloy wheel designs raise the profile view, and at the rear a diffuser inset into the rear bumper and also adopted from S line versions adds even more sporting emphasis. 2011 Model Year TT models will also be more distinct thanks to five new metallic and pearl effect paint options.

S line models adopt an even more resolutely sporting stance than before through a bumper and grille treatment which closely resembles the look of the TTS in its familiar current form, and which is further enhanced by standard xenon headlamps with LED daytime running lights. Notable features also include deeper TTS-style side sills and a new platinum grey diffuser at the rear. The TTS, in turn, now signals its even more serious sporting intent with a new front bumper design featuring horizontal aluminium look double bars which also extend down to the fog light surrounds, and a new look rear bumper treatment.

Widely regarded as the benchmark for quality of finish, the interior features new aluminium-look applications for the steering wheel, the centre console and the door liner, and a new high gloss finish for switches, panel surfaces and air vent inner sections. The aluminium strip above the glove box door is now brushed grey. There are three new interior colours from which to choose - nougat brown, titanium grey and garnet red.

The specification range in the UK has also been simplified. A ‘Standard' trim level is now reserved solely for the TT Roadster 1.8 TFSI, and at extra cost this can be upgraded to Sport or S line specification. All other versions of the Coupe and Roadster (excluding the TTS and TT RS) begin at Sport level and can be upgraded to S line.

Onboard computer with new efficiency program
Another key efficiency boosting measure can also be found in the cockpit, where a new efficiency program within the onboard computer displays all consumption-related data on the central display, and gives the driver tips for efficient driving. A gear-change indicator also indicates the optimal gear for fuel-efficient driving, while another function provides information on which vehicle systems, such as the climate control system, are consuming energy and how that affects fuel consumption.

The Audi TTS and the Audi TT RS
The Audi TTS, both in Coupe and Roadster body styles, combines outstanding performance with an equally high degree of comfort. Its extensively modified 2.0-litre TFSI engine with large turbocharger pumps out 272PS and 350 Nm of torque, the latter from 2,500 to 5,000 rpm. It accelerates the TTS Coupe with the optional S tronic from zero to 62mph in 5.2 seconds, up to a governed top speed of 155mph. When the S tronic transmission is specified, the Coupé has the potential to cover up to 36.7mpg. The TTS is fitted as standard with the Audi magnetic ride adaptive shock absorber technology.

Visual cues to its status in the range are provided by 18-inch wheels with size 245/40 tyres and a new grille combined with chrome air inlets. A new colour combination - spectral silver/black - is also available for the interior.

The dynamic spearhead of the TT model series is the TT RS, which is also available as a Coupe or a Roadster. Its turbocharged, inline 5-cylinder engine draws 340PS of power from 2.5 litres of displacement. 450 Nm of torque is available between 1,600 and 5,300 rpm. In spite of this formidable power, up to 30.7mpg is possible according to the European cycle test.

The TT RS Coupe rockets from 0 to 62mph in 4.6 seconds, and can reach a governed top speed of 155mph which can be raised to 174mph at extra cost. A sound flap in the exhaust system further intensifies the distinctive five-cylinder sound. A manual six-speed short-shift transmission currently channels power to the quattro permanent all-wheel drive, and later in 2010 a newly developed version of the S tronic twin-clutch transmission will also be offered as an option. The compact layout of the seven-speed, dual-clutch transmission makes it suitable for transverse mounting in combination with the quattro all-wheel drive system.

Equipped with S tronic, the TT RS Coupe launches from rest to 62mph in 4.4 seconds - a fraction more quickly than the manual transmission version. Distinctive design details, 18-inch wheels and a powerful brake system are standard with the TT RS.

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