With 286bhp at 5000rpm in overboost mode, at which turbocharger boost pressure is raised from a nominal 1.9 to 2.1 bar for periods of up to 10 seconds, it develops 44bhp more than the less heavily tuned engine used by the standard Golf GTI with the optional performance package. Torque remains at the same level offered by the strongest of the standard Golf GTI models, building to a peak of 272lb ft between 1600rpm and 4300rpm.
VW has confirmed to Autocar that the production version of the Golf GTI TCR will use the same engine, which comes as standard with a particulate filter and the titanium Akrapovič exhaust system previously only available on the four-wheel-drive Golf R, in combination with a front differential lock and six-speed dual-clutch gearbox with steering wheel-mounted shift paddles.
As with the standard Golf GTI, the driver can choose between four driving modes: Eco, Normal, Sport and Individual — the latter of which permits specific tuning of the steering, engine mapping and gearbox software, as well as the optional adaptive damping system, Dynamic Chassis Control (DCC).
VW has yet to reveal a kerb weight or acceleration claims for the Golf GTI TCR, but it has revealed that its limited 155mph top speed can be raised to 168mph through an optional pack.
As a point of reference, the Golf GTI Clubsport, with which the Golf GTI TCR shares its complete driveline, is claimed to weigh 1375kg and boasts a 0-62mph time of 5.9sec.
Among the chassis tweaks accompanying the performance upgrade of the new model is a 20mm reduction in ride height, standard 19in wheels and upgraded brakes featuring larger discs and callipers than those in the standard model.
The Golf GTI TCR is differentiated from the standard Golf GTI by a series of styling changes all aimed at enhancing its performance, according to VW. They include a reprofiled front bumper featuring altered outer ducts to cool an additional radiator within the engine bay, a more prominent front splitter element, wider sills underneath the doors and a large full-width diffuser element at the rear housing by two chromed Akrapovič tailpipes.