What breaks most · 1998 to 2006 model years
Jaguar XJ8 problems by year
Owners have filed 176 safety complaints with NHTSA about the Jaguar XJ8 across model years 1998 to 2006. Three years stand out: 1998 for engine and cooling complaints, 2004 for suspension complaints and 2001 for body and structure complaints. The quietest years are 2002, 2003 and 1999.
- Years to check closely: 1998, 2004, 2001
- Fewest complaints: 2002, 2003, 1999
- Complaints on file
- 1761998 to 2006, all trims
- Worst year
- 199883 complaints
- Crashes reported
- 144 fires · 12 injuries · 0 deaths
- Typical failure mileage
- 66kMedian where owners gave mileage
- Recall campaigns
- 6Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 83 | 3 | 1 | Engine and cooling (35) | |
| 11 | 1 | 1 | Engine and cooling (5) | |
| 13 | 0 | 1 | Body and structure (6) | |
| 2 | 0 | 1 | Brakes (hydraulic) (1) | |
| 3 | 0 | 1 | Fuel system (1) | |
| 54 | 10 | 1 | Suspension (17) | |
| 6 | 0 | 0 | Powertrain and transmission (3) | |
| 4 | 0 | 0 | Electrical system (1) |
What fails on the 1998 Jaguar XJ8
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| Engine and coolingRadiators, thermostats and cooling | 42% |
35 | 1 | Shop engine and cooling parts for the 1998 Jaguar XJ8 |
| Powertrain and transmissionTransmission parts | 17% |
14 | 0 | Shop all powertrain and transmission parts, not filtered to this vehicle |
| Speed control and throttleThrottle and pedal sensors | 16% |
13 | 1 | Shop speed control and throttle parts for the 1998 Jaguar XJ8 |
| Electrical systemAlternators, starters and ignition | 13% |
11 | 0 | Shop electrical system parts for the 1998 Jaguar XJ8 |
| Fuel systemFuel pumps and injectors | 5% |
4 | 0 | Shop fuel system parts for the 1998 Jaguar XJ8 |
| EngineEngine gaskets and seals | 4% |
3 | 0 | Shop engine parts for the 1998 Jaguar XJ8 |
| Seats | 4% |
3 | 0 | — |
| SuspensionStruts, springs and control arms | 4% |
3 | 0 | Shop suspension parts for the 1998 Jaguar XJ8 |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
-
Vehicle stalls at highway speed without warning. Throttle body repaired by dealer twice but problem not fixed. Jaguar mailed out letter calling for car to be checked by dealer which i did. Fix lasted 35k miles now problem back! Very dangerous! Dealer will not honor repair. *nm
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Suspension fault light comes on and car drops down,can be dangerous when driving and cause a accident,this is a common problem with this car and should be addressed by jaguar
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The analog gauge readings were not visible on the instrument cluster while driving in day light. *ak the consumer asked a salesman about this problem and he stated that they all performed that way. *nlm
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 6, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which Jaguar XJ8 years have the most problems?
By NHTSA complaint volume, 1998, 2004, 2001 carry the most filings on the Jaguar XJ8. The 1998 alone has 83 complaints, led by engine and cooling.
What is the most common Jaguar XJ8 problem?
On the 1998 model year, the most-reported component is engine and cooling with 35 complaints. The table above lists the top components for every year.
At what mileage do Jaguar XJ8 problems start?
The median mileage at failure across all Jaguar XJ8 complaints that include mileage is about 66,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.