The quattro drive uses an electro-hydraulic multi-plate clutch to distribute the torque to both axles. In many everyday driving situations, it will direct the engine’s power predominantly to the front wheels. Should traction decrease there, the clutch continuously redirects the torque to the rear within a few milliseconds.
At the limit, the quattro drive operates in close tandem with wheel-selective torque control, an intelligent software feature of the Electronic Stabilization Control (ESC). This makes handling even more fluid and stable thanks to targeted, finely dosed brake applications to the wheels on the inside of the curve. On low-friction surfaces, the permanent all-wheel drive system even allows safe, controlled drifts.
The clutch management is integrated into the optional Audi drive select dynamic handling system. This allows the driver to modify the character of their TT in the modes comfort, auto, dynamic, efficiency and individual. As well as governing the all-wheel-drive system, Audi drive select influences the response of the accelerator pedal, steering assistance and S tronic. It also integrates several optional modules such as the Audi magnetic ride adaptive damper control and the deluxe automatic air conditioning.
The compelling performance of the Audi TT stems from its combination of quattro drive and the refined flow of power from the four-cylinder diesel engine. It develops 135 kW (184 hp) from a displacement of 1,968 cm3 and unleashes its maximum torque of 380 Nm (280.3 lb-ft) over the rev range of 1,750 to 3,250 rpm. The common rail system injects the fuel through eight-hole nozzles at up to 2,000 bar. The high pressure paves the way for fine atomization, making the combustion process efficient and low on emissions. The intercooler is located in the intake manifold module. Along with the compact design, this arrangement achieves short gas paths, effective control processes and therefore spontaneous response along with high efficiency.
The TT Coupé 2.0 TDI quattro S tronic* accelerates from 0 to 100 km/h (62.1 mph) in 6.7 seconds and goes on to clock a top speed of 234 km/h (145.4 mph). The Roadster accomplishes the standard sprint in 7.0 seconds and advances to a top speed of 230 km/h (142.9 mph). In the Coupé, the 2.0 TDI quattro S tronic achieves fuel consumption of 5.2 liters per 100 kilometers (45.2 US mpg) according to the NEDC measuring method, which equates to 137 grams of CO2 per kilometer (220.5 g/mi). For the TT Roadster*, the figures are 5.4 l/100 km (43.6 US mpg) and 142 g CO2 per kilometer (228.5 g/mi).
The introduction of the 2.0 TDI quattro S tronic means the Audi TT portfolio now comprises seven engine/transmission variants, of which five are gasoline versions. The front-wheel-drive two-liter diesel with six-speed manual transmission remains available. The all-wheel-drive version with S tronic is now available to order – prices start at EUR 41,250 for the TT Coupé and EUR 43,650 for the TT Roadster. Deliveries will commence in early 2017.
Fuel consumption of the models named above:
Audi TT Coupé 2.0 TDI quattro S tronic 135 kW:
Combined fuel consumption in l/100 km: 5.4 – 5.2** (43.6 – 45.2 US mpg);
Combined CO2 emissions in g/km: 142 – 137** (228.5 – 220.5 g/mi)
Audi TT Roadster 2.0 TDI quattro S tronic 135 kW:
Combined fuel consumption in l/100 km: 5.6 – 5.4** (42.0 – 43.6 US mpg);
Combined CO2 emissions in g/km: 147 – 142** (236.6 – 228.5 g/mi)
Audi TT Coupé:
Combined fuel consumption in l/100 km: 6.6 – 4.6*** (35.6 – 51.1 US mpg);
Combined CO2 emissions in g/km: 153 – 122*** (246.2 – 196.3 g/mi)
Audi TT Roadster:
Combined fuel consumption in l/100 km: 6.9 – 4.7** (34.1 – 50.0 US mpg);
Combined CO2 emissions in g/km: 158 – 126*** (254.3 – 202.8 g/mi)
** Figures depend on the tire/wheel sets used
*** Figures depend on the tire/wheel sets used and the engine/transmission variant