The current Jaguar XJ is 5,175 mm long, 1,899 mm wide and 1,460 mm tall, on a 3,077 mm wheelbase. It has grown 22 cm longer since the 1982 XJ.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 1982–1986 | 4,959 | 1,770 | 1,377 | 2,865 | 480 | 13.0 |
| 1986–1994 | 4,986 | 1,792 | 1,380 | 2,870 | 433 | 12.4 |
| 1994–2003 | 5,064 | 1,799 | 1,317 | 2,910 | 410 | 12.1 |
| 2003–2007 | 5,137 | 1,860 | 1,451 | 3,081 | 470 | 11.7 |
| 2007–2009 | 5,145 | 1,860 | 1,451 | 3,089 | 470 | 11.7 |
| 2009–2015 | 5,182 | 1,894 | 1,448 | 3,092 | 520 | 12.3 |
| 2015–2021Current | 5,175 | 1,899 | 1,460 | 3,077 | 520 | 11.9 |
Exterior figures are manufacturer specifications for the XJ, averaged per generation across its variants and shown for the most common body style. Generations with the same size are merged. Boot capacity is the seats-up figure where the manufacturer quotes one.