The 1994 Formula One cheating controversy was a series of allegations made throughout the 1994 Formula One season. Several Formula One teams were involved, with the main allegations surrounding Benetton Formula. Initially, Benetton was alleged to have been using illegal traction control software to their advantage in races; however, this could not be sufficiently proven by the FIA. A refuelling fire on Jos Verstappen's Benetton car at the German Grand Prix led to renewed allegations and an investigation by Intertechnique at Benetton's team factory. Following the investigation, the FIA revealed Benetton had been using a fuel valve without a fuel filter, which allowed fuel into the car 12.5% faster than a legal fuel valve.