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The new Audi TT Coupe 2.0 TFSI can now manage 42.8 mpg, up from 36.7 mpg, with CO2 emissions down from 183g/km to 154g/km.
This represents a 14 per cent improvement in efficiency, yet the car is also faster, with a 0-62mph time of 6.1 seconds and a top speed of 152 mph.
The increased efficiency is thanks in part to energy recuperation technology on the new 2.0-litre TFSI engine.
The upgraded 211PS 2.0-litre Turbo FSI petrol engine comes with Audi valvelift technology to result in improvements in power, torque and overall efficiency compared with the 200PS version it replaces.
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 accompanied 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.
If you want even more fuel economy, then the diesel TT 2.0 TDI can manage 53.3mpg along with 139 g/km CO2. The 2.0-litre engine is mated to a manual transmission and quattro all-wheel drive and can reach 62mph in 7.5 seconds and a top speed of 140mph.
All models have a six-speed manual transmission, 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 Sport button, which has been a standard feature of the TT RS since launch, now becomes available as an option for all other models. This 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.
A new efficiency programme 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 2011 model range also includes minor interior and exterior styling revisions.
