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.
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.
The upgraded 2.0-litre Turbo FSI petrol engine is the technological highlight in the latest range, employing Valvelift Technology to effect improvements in power, torque and overall efficiency compared with the 200 PS version it replaces. Delivering 211 PS between 4,300 rpm and 6,000 rpm and a 350 Nm torque peak between 1,600 rpm and 4,200 rpm, it enables the TT 2.0 TFSI with six-speed manual transmission to reach 62 mph from rest in 6.1 seconds (0.5 seconds more rapidly than its predecessor) and raises its top speed from 149 mph to 152 mph. It boosts economy potential from 36.7 mpg in the combined cycle test to 42.8 mpg, and pares back CO2 output from 183 g/km to 154 g/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.
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 160 PS 1.8-litre TFSI petrol engine that continues to power the TT Roadster and the 170 PS 2.0-litre TDI unit used by the TT Coupe and Roadster.
The TT 2.0 TDI covers up to 53.3mpg according to the combined cycle test, which corresponds to 139 grams of CO2/km. With 170 PS and 350 Nm of torque (the latter available between 1,750 and 2,500 rpm) the common rail injection engine powers the TT to 62 mph in 7.5 seconds and on to 140 mph. The 2.0-litre TDI is mated to a manual transmission and Quattro all-wheel drive.
A 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.
Another new development that might 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.