Vehicle
Jaguar XJ
The aluminium flagship saloon, and the Jaguar with the longest module list — air suspension, adaptive dampers and a full comfort suite, each storing its own faults. As on any car this networked, a marginal battery manufactures a screenful of plausible-looking codes.
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Generations
-
X300 1994–1997
The last straight-six XJ and the last V12, on the XJ40 floorpan. Both engines lose their distributor for coil packs, so an ignition misfire is traced at the pack rather than a cap and rotor, and every V12 and almost every supercharged XJR was built with the GM four-speed rather than a ZF.
- Body styles
- Sedan
- Platform
- Jaguar XJ40
- Engines
-
- 3.2 straight-six — AJ16 · petrol
- 4.0 straight-six — AJ16 · petrol
- 4.0 supercharged straight-six — AJ16 · petrol · 512 Nm (378 lb-ft) · XJR
- 6.0 V12 — petrol · XJ12 and Daimler Double Six
- Transmissions
- 4-speed ZF 4HP-22 automatic · 4-speed ZF 4HP-24 automatic · 4-speed GM 4L80-E automatic · 5-speed Getrag 290 manual
- Drivetrain
- Rear-wheel drive
-
X308 1997–2002
The first V8 XJ and the last car on the XJ40 floorpan — no manual gearbox and no six or twelve at all. The plastic timing chain tensioners are the fault that decides one of these: a cold start-up rattle that ends in a jumped chain, and whether the revised metal tensioners are fitted is the single most useful fact about a given engine.
- Body styles
- Sedan
- Platform
- Jaguar XJ40
- Engines
-
- 3.2 V8 — petrol · 179 kW (240 hp) · 316 Nm (233 lb-ft)
- 4.0 V8 — petrol · 216 kW (290 hp) · 393 Nm (290 lb-ft)
- 4.0 supercharged V8 — AJ26S · petrol · 276 kW (370 hp) · 525 Nm (387 lb-ft) · XJR and Daimler Super V8
- Transmissions
- 5-speed ZF 5HP24 automatic · 5-speed W5A580 automatic
- Drivetrain
- Rear-wheel drive
-
X350 2002–2009
Aluminium monocoque, riveted and bonded rather than spot-welded, on self-levelling air suspension — so both the body repair method and the ride-height faults are unlike any steel XJ before it. The 2.7 diesel is the European volume engine, and the 2007 facelift carries the internal code X358.
- Body styles
- Sedan
- Platform
- Jaguar X350
- Engines
-
- 3.0 V6 — AJ30 · petrol · 173 kW (232 hp) · 293 Nm (216 lb-ft)
- 3.5 V8 — petrol · 195 kW (261 hp) · 345 Nm (254 lb-ft)
- 4.2 V8 — AJ34 · petrol · 420 Nm (310 lb-ft)
- 4.2 supercharged V8 — AJ34S · petrol · 541 Nm (399 lb-ft) · XJR and Super V8
- 2.7 TDV6 — diesel · 150 kW (201 hp) · 435 Nm (321 lb-ft)
- Transmissions
- 6-speed ZF 6HP26 automatic
- Drivetrain
- Rear-wheel drive
-
X351 2009–2019
3.0 V6 diesel at European fleet volume; supercharged V8 above it.
- Body styles
- Sedan
- Platform
- Jaguar X351
- Engines
-
- 2.0 turbo — petrol
- 3.0 supercharged V6 — petrol · 250 kW (335 hp) · 450 Nm (332 lb-ft)
- 5.0 V8 — AJ-V8 · petrol · 283 kW (380 hp) · 515 Nm (380 lb-ft)
- 5.0 supercharged V8 — AJ-V8 · petrol · 346–405 kW (464–543 hp) · 575–625 Nm (424–461 lb-ft) · XJR
- 3.0 V6 diesel — diesel · 202–221 kW (271–296 hp)
- Transmissions
- 6-speed automatic · 8-speed automatic
- Drivetrain
- Rear-wheel drive · Four-wheel drive
Information, not instruction
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