The Jaguar XJR Sportscars were a series of race cars used by Jaguar-backed teams in both the World Sportscar Championship (WSC) Group C and the IMSA Camel GTP series between 1984 and 1993.
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Starting in 1983, the project was started by American team Group 44 Racing who had the backing of Jaguar to supply V12 engines for the Fabcar-built racer known as XJR-5 and participated in the IMSA Camel GTP championship. After becoming established in IMSA, Jaguar turned to Tom Walkinshaw Racing (TWR) to develop another car known as XJR-6 for the World Sportscar Championship, using the same Jaguar V12, and debuting halfway into the 1985 season.
Jaguar would continue to use two different types of chassis for IMSA and WSC until 1988 when Jaguar chose to have TWR take over their team for both championships, and building an identical car for both series, known as the XJR-9.
After having used the V12 in varying sizes, TWR decided to try a new turbocharged 3.5L V6 for the XJR-10 (for IMSA) and XJR-11 (for WSC) in the 1989 season. However, the FIA announced rule changes to come into effect for the World Sportscar Championship that would require all teams to change to 3.5L naturally aspirated engines. TWR decided that continuing to develop their V6 in WSC was useless, so the new XJR-12 for WSC in 1991 was better suited to carry the old but reliable V12. The XJR-12 was short lived as in 1991, Jaguar decided to debut their new 3.5L naturally aspirated V8 engine by Cosworth for the XJR-14.
After having won multiple championships in WSC, and instability due to multiple rule changes, Jaguar decided to drop out following the 1991 season and concentrate on IMSA. However, after attempting the first few races of the 1993 season, Jaguar decided to end the project altogether, marking the end of the XJR sportscars. Jaguar and TWR attempted to continue racing on with a cheaper and smaller scale project, a racing version of the XJ220 for the GT classes, but it was short lived.
One unique XJR model was the 1990 XJR-15, which was a limited edition road legal supercar built by TWR from the design of the XJR-9 and featuring Jaguar's V12. Several XJR-15s were also built into racing cars for a special one-make series meant as a support race for Formula One.
The following cars were built for Jaguar's sportscar racing.
| Awards | ||
|---|---|---|
| Preceded by Williams FW11 |
Autosport Racing Car Of The Year (Jaguar XJR-8) 1987 |
Succeeded by McLaren MP4/4 |
| Type | 1980s | 1990s | 2000s | 2010s | ||||||||||||||||||||||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | |
| Grand Tourer | XJ-S | XJ-S HE | XJS | XK8 / XKR | XK / XKR | |||||||||||||||||||||||||||
| Compact exec | X-Type | |||||||||||||||||||||||||||||||
| Executive car | S-Type | XF/XFR | ||||||||||||||||||||||||||||||
| Luxury | XJ6 S3 | XJ6 (XJ40) | XJ6 | XJ8 / XJR | XJ8 / XJR | XJ | ||||||||||||||||||||||||||
| XJ12 S3 | XJ12 | XJ12 | ||||||||||||||||||||||||||||||
| Supercar | XJR-15 | XJ220 | ||||||||||||||||||||||||||||||
| Racing | XJRs | C | R1/2/3/4/5 | XKR GT3/GT2 | ||||||||||||||||||||||||||||
| Ownership | BL | Independent | Ford | Tata Motors | ||||||||||||||||||||||||||||