World Rally Car

[citation needed] A number of modifications could be made including increasing the engine displacement up to 2.0L, forced induction (including an anti-lag system), addition of four wheel drive, fitment of a sequential gearbox, modified suspension layout and attachment points, aerodynamic body modifications, weight reduction to a minimum of 1230 kg and chassis strengthening for greater rigidity.

[citation needed] At 2000 rpm (the engine idle speed in "stage" mode) power output was slightly above 150 kW (200 hp).

[citation needed] Cars entered by a manufacturer had to be equipped with the same engine for two rallies; further limitations were imposed on the changing of some parts, including suspension, steering, turbochargers, and gearboxes.

The cars could be smaller models (there was no longer a minimum 4 m length) and include a custom-build or production 1600 cm3 direct injection turbo-charged global race engine with a 33 mm (1.3 in) diameter air restrictor and a maximum boost pressure of 2.5 bar (36 psi) absolute.

Exotic materials (titanium, magnesium, ceramics and composite) were forbidden except when present in the base model.

[10] Manufacturers were given more freedom to maximise aerodynamic performance, including large brake cooling ducts in fairings forming enlarged wheel arches.