In 1991 Walkinshaw was recruited as Engineering Director of the Benetton F1 team which subsequently won the 1995 Formula One World Championship. He was involved in the recruitment of Michael Schumacher by Benetton after the German's Formula One debut with the Jordan team. As Engineering Director, his role also came under scrutiny when the team was investigated for suspected technical infringements during the 1994 season, including the potential use of banned electronic aids and unauthorised modifications to the refuelling apparatus used on the cars. Although illegal software was found in the Benettons, the FIA had no evidence that it had ever been used in a race and no action was taken against the team.