1 | 2 | Brazilian Grand Prix | 6 | Riccardo Patrese | Williams FW13B | Renault RS2 | 4 | Fuel Pressure |
2 | 3 | San Marino Grand Prix | 5 | Thierry Boutsen | Williams FW13B | Renault RS2 | 4 | Engine |
3 | 4 | Monaco Grand Prix | 6 | Riccardo Patrese | Williams FW13B | Renault RS2 | 4 | Mechanical |
4 | 5 | Canadian Grand Prix | 5 | Thierry Boutsen | Williams FW13B | Renault RS2 | 6 | Collision |
5 | 5 | Canadian Grand Prix | 6 | Riccardo Patrese | Williams FW13B | Renault RS2 | 9 | Brakes |
6 | 7 | French Grand Prix | 5 | Thierry Boutsen | Williams FW13B | Renault RS2 | 8 | Engine |
7 | 8 | British Grand Prix | 6 | Riccardo Patrese | Williams FW13B | Renault RS2 | 7 | Chassis |
8 | 11 | Belgian Grand Prix | 5 | Thierry Boutsen | Williams FW13B | Renault RS2 | 4 | Transmission |
9 | 11 | Belgian Grand Prix | 6 | Riccardo Patrese | Williams FW13B | Renault RS2 | 7 | Gearbox |
10 | 12 | Italian Grand Prix | 5 | Thierry Boutsen | Williams FW13B | Renault RS2 | 6 | Suspension |
11 | 13 | Portuguese Grand Prix | 5 | Thierry Boutsen | Williams FW13B | Renault RS2 | 7 | Engine |