1999 Jaguar XK8 · 2,285 MOT tests
1999 Jaguar XK8 reliability
1999 Jaguar XK8s fail 25.7% of first MOT tests, 29% fewer MOT fails than the average car its age and mileage, ranking 7 of 9 XK8 years (2,285 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Jaguar XK8s: 25.9%)
- 25.7%
- first-time fail rate (all Jaguar XK8s: 25.9%)
- fails than cars of the same age and mileage
- 29% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 24
- 87,586
- typical miles at its MOT, aged about 24
- MOT tests, 2022 to 2024
- 2,285
- MOT tests, 2022 to 2024
Year on year
1999 against the years either side
- 1998 cars: 28% fewer MOT fails than the average car its age (the 1999 car does better)
- 2000 cars: 18% fewer MOT fails than the average car its age (the 1999 car does better)
- Weak spot: exhaust, emissions and leaks, 9.9% of tests fail here (41% above cars of the same age and mileage).
- Strong point: steering, 67% fewer fails than comparable cars.
Common problems
What fails on a 1999 Jaguar XK8
Fail rate by area
- Exhaust, emissions and leaks9.9%
- Brakes8.6%
- Lights and electrics7.9%
- Suspension7.8%
- Body, chassis and structure4.1%
- Windscreen, wipers and mirrors3.5%
- Tyres3.3%
Average for cars of the same age and mileage
Top failures
Lambda reading outside specified limits 3.89%
An out-of-range lambda reading suggests poor fuel mixture or a failing catalytic converter, so diagnosis is needed.
ABS warning lamp shows a fault 2.1%
A lit ABS warning means the anti-lock system may not work, so wheels could lock during emergency braking.
Carbon monoxide high after fast idle 2.01%
High carbon monoxide can point to engine or catalytic converter faults, so ask for diagnosis before buying.
Suspension mounting area seriously corroded 1.97%
Corrosion near suspension mountings can seriously weaken the body structure, so an expert inspection is needed.
Carbon monoxide above manufacturer's idle limit 1.79%
Exceeding the manufacturer's idle limit suggests engine tuning or emission faults, so the car needs diagnosis before buying.
Carbon monoxide high, default limits 1.27%
High carbon monoxide at fast idle suggests engine or exhaust-emission faults, so diagnosis is recommended before buying.
Common advisories
Brake pipes corroded and greasy (6.56%) · Tyre worn close to legal limit (6.35%) · Tyre slightly damaged or cracking (5.38%) · Wheel bearing slight play (4.99%) · Coil spring showing some corrosion (3.63%) · Suspension mounting area showing corrosion (3.54%)
Is a 1999 Jaguar XK8 reliable?
1999 Jaguar XK8s fail 25.7% of first MOT tests, 29% fewer MOT fails than the average car its age and mileage, ranking 7 of 9 XK8 years (2,285 DVSA tests, 2022 to 2024).
What fails on a 1999 Jaguar XK8 MOT?
Most often lambda reading outside specified limits (3.89% of tests), abs warning lamp shows a fault (2.1% of tests), carbon monoxide high after fast idle (2.01% of tests).
How many miles should a 1999 Jaguar XK8 have done?
At its MOT aged about 24, a typical 1999 Jaguar XK8 shows 87,586 miles. Much higher or lower is worth asking about.
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