2015 Audi TT | spy shots

Audi's third generation TT sports car has been locked in for a March unveiling at the Geneva Motor Show, but we're getting to see increasingly more of the new car in the lead-up to its global debut. We saw the sports coupe's stunning air-craft inspired interior at this year's Consumer Electronics Show, and now a prototype TT has been spotted by Carsguide's spy photographers wearing almost no camouflage during an evening drive.

Predictably, the next generation TT's design is evolutionary rather than revolutionary. Like the current TT, the new model's design incorporates a low, sleek roofline with a rear hatchback and flared wheel-arches. New design cues include more aggressive, angular headlights, a sharper, larger grille and LED taillights. The rear of the car also appears to have been influenced by the R8 supercar with a similarly short overhang and clean design.

The entry level TT will likely carry a 132kW 1.8-litre TFSI engine powering with front wheels alone, while quattro all-wheel drive models powered by a 2.0-litre TFSI engine tuned to 162kW or 221kW in TT S trim are expected to complete the launch model line-up. It is believed a TT RS will also debut at some stage, potentially with a 300kW version of Audi's 2.5-litre five-cylinder engine.

Gearbox options are tipped to mirror those of the current A3 range, meaning a standard six-speed manual or optional seven-speed dual-clutch gearbox will be available. After its Geneva unveiling, the new TT will go on sale in overseas markets towards the end of the year, and arrive here some time in 2015.