In his autobiography, Mansell claimed that his final race with the Lotus team—the 1984 Portuguese Grand Prix—was heavily compromised by Warr's unwillingness to give Mansell the brake pads he desired for the race. With 18 laps of the race remaining, and with Mansell in second position, the brakes on his car failed. On Mansell's departure, Warr was quoted as saying "He'll never win a Grand Prix as long as I have a hole in my arse".