Three chassis were built and used for 1991: 591, 691, & 791. In the early part of the 1991 World Sportscar Championship season the XJR-14 was in a league of its own, totally outclassing its rivals and in particular the Peugeot 905 and Mercedes-Benz C291. Only the opening race went Peugeot's way, but that was seen more as a result of luck than the 905's competitiveness. The fact that Jaguar already had a race proven engine certainly helped the team’s cause, but the rest of the car was far superior to its rivals.