Audi is expanding the TT range this week by introducing new, third-generation versions of the TDI quattro Coupé and Roadster models. Slotting into the line-up alongside the established front-wheel-drive TDI models, the new all-wheel-driven versions are now available to order priced from £34,230, and are due to start arriving with UK customers in the spring.

A six-speed S tronic twin-clutch transmission partners the 2.0 TDI unit in the new variants, and appropriate distribution of the 181bhp and 280 lb ft of torque that it channels to both axles is the responsibility of the electro-hydraulic multi-plate clutch at the heart of the quattro system. It incorporates wheel selective torque control designed for more precise and agile roadholding in all weathers. Sprint times reflect the traction advantages, with zero to 62mph in the Coupé dipping to 6.7 seconds compared to 7.1 seconds for the TDI ultra, while top speed is 145mph. In the Roadster, 62mph takes 7.0 seconds, three tenths quicker than the ultra, with a 142mph top speed.

Audi says delivery of drive to all four wheels has done little to diminish the efficiency of the TT 2.0 TDI, with a combined fuel consumption figure of 52.3mpg achievable according to the NEDC, corresponding to CO2 of 142g/km. As a Roadster, the TT 2.0 TDI quattro S tronic returns up to 50.4mpg, with 147g/km of CO2.