[2] The original FW15 was a new car designed in 1992 to incorporate the active suspension changes developed by Frank Dernie and implemented on the previous season's FW14B.

With Newey's aerodynamic input the FW15 was a significant improvement on its predecessor, with a narrower nose, sleeker airbox and engine cover and carefully sculpted sidepods.

[7] CVTs have the potential to dramatically increase average engine power over a lap, providing a significant advantage over competing teams.

The FW15C also featured a push-to-pass system (left yellow button on the steering wheel), which would use the active suspension to lower the car at the rear and eliminate the drag from the diffuser, effectively increasing speed through a lack of downforce.

Williams was able to use the electronics, so they could sync up a flawless link that would simultaneously set the engine for another 300 revs, and raise the active suspension for when the driver needed extra speed while overtaking.

Triple world champion Alain Prost had signed with Williams for the 1993 season, having spent the previous year out of motorsport competition on a sabbatical.

Reigning Champion Nigel Mansell departed Formula One, over a dispute with Frank Williams about money and the signing of Prost, to race in the American CART series for 1993, while Riccardo Patrese moved to Benetton-Ford.

In the race Prost retired midway through, a victim of someone else's accident, and Senna managed to get past Hill to win, with the Englishman registering his first podium and points in F1 in second.

The third race of the season at Donington Park saw Senna's most dominant performance, with Hill taking second with Prost inheriting third from the Jordan-Hart of Rubens Barrichello late on after the Brazilian lost fuel pressure resulting in his retirement.

In Hungary Hill finally got his first win, a task made easier after Prost stalled on the warm-up lap and had to start from the rear of the grid.

Prost fought his way up to fourth before a rear wing failure ended his bid for a points finish, but a retirement for Senna meant there was no ground lost.

Senna experienced a terrible run of fortune but was still in with a mathematical chance of the title as the teams met in Portugal, but Prost's second place was enough to secure his fourth World Drivers' Championship, prompting the Frenchman to announce his retirement at the end of the year.

[citation needed] In particular this trait manifested itself in slight rear-end instability under braking, most notable on high speed circuits such as Hockenheim when the car was operating in a low downforce trim.

[citation needed] This however was alleviated with the fitting of a power throttle system at Imola ensuring that the revs could be perfectly matched when the clutch was engaged.

The FW15D was used during the Rothmans Williams Renault launch at Estoril, on 19 January 1994 (Notably with Hill driving with an onboard camera recorder, and not Senna as many have incorrectly assumed).