Audi is making its TT range even more appealing to user-choosers with a new diesel-powered model.

Due to go on sale in the UK this summer, the TT TDI Quattro is powered by a 170bhp 2.0-litre engine driving all four wheels.

It returns claimed average fuel economy of 53.3mpg and CO2 emissions of just 140g/km. The engine already complies with Euro V emissions legislation.

Available in both coupé and open-topped Roadster format, the diesel TT combines frugality with performance with a top speed of 140mph. The 0-62mph sprint takes 7.5 seconds.

Prices start at £26,350 for the coupé which represents a £1,350 premium over the current 2.0 TFSI entry-level petrol model.