WRC cars will run the same 1.6-litre engines they ran in 2016, with Hyundai Motorsport sticking to last year’s T-GDI concept. Changes include an increase in air restrictor size from 33mm to 36mm and a boost in overall power from some 315 horsepower to around 380, giving the cars a much more aggressive sound on the road.
The minimum weight of the cars is reduced from 1,200kg to 1,175kg for 2017. A 25kg weight difference may seem like a small margin, but this – coupled with the increase in power – will have a significant impact on the cars overall performance.
One major visual change compared to last year will be the size of the cars – thanks to a 55mm increase in minimum width. The cars will also have a larger overhang at the front and rear, giving them a more purposeful appearance.
The Power Train is home to some of the most high-tech components in a WRC car, including the 4x4 system. 2017 sees the return of electronic central differentials to complement sequential gearboxes and other state-of-the-art systems.
WRC cars have a number of aerodynamic devices including wings at the front and rear of the car in order to improve the car’s downforce. Rear wings increase in size for 2017 and become more efficient, giving drivers more grip on high speed rally stages.