With the new TT, Audi’s challenge was to successfully update the iconic shape of the radical original model, launched in 1998.
The new car is wider and longer and incorporates Audi’s distinctive new grille – as introduced on its other models in recent years.
The Z4 Coupe is the latest iteration of the much talked about design philosophy of controversial BMW chief designer Chris Bangle.
It builds on the aggressive, long-bonneted styling of the Z4 Roadster, with the addition of a sloping hard-topped glass-house and a rear tailgate opening to an expanded luggage area.
The TT range starts with a 147kW direct-injection turbocharged four-cylinder engine while the top model will be the quattro permanent all-wheel drive version powered by a 3.2-litre V6 pushing out 184 kW.
On the BMW stand, the Z4 Coupe will offer a 3.0-litre straight-six producing 195kW, while the M version ups the ante with a 3.2-litre 252kW engine shared with the famed BMW M3.
The TT is constructed using an innovative ASF Space Frame that combines aluminium components at the front with metal components at the rear.
The result is better weight distribution which, combined with a wider track and new transverse-link front and four-link rear suspension, is designed to give the TT improved handling.
BMW says the Z4 Coupe has perfect 50/50 front/rear weight distribution and is only slightly heavier than the roadster version thanks to an aluminium bonnet and the use of high-strength steel.
Technical highlights of the TT include a magnetic ride damping system, electrically retractable rear spoiler and adaptive xenon cornering lights.
The Z4 Coupe features standard Dynamic Stability Control and traction control systems, while the M Coupe version adds a differential lock and 18-inch high-performance compound brake system.