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Jaguar XJ8LModel year report

1999 Jaguar XJ8L Problems

Complaints
9filed with NHTSA
Median mileage
87,815miles, 7 complaints with mileage
Recalls
0campaigns on record
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA crash rating
—overall rating starts with 2011 models
EPA fuel economy
18 mpgcombined, 4.0L 8-cyl RWD · 15 city / 22 hwy

Sources: NHTSA records for the 1999 Jaguar XJ8L (complaints, recalls, investigations), EPA fuel economy. Report an error

NHTSA recorded 9 consumer complaints for the 1999 Jaguar XJ8L. The part named most often is engine cooling, with 2 complaints (22% of the total), followed by electrical system (1) and engine (1). 7 of the complaints include a mileage, and 14% of those were filed for vehicles with under 50,000 miles; the median is 87,815 miles. Of all complaints, 1 involved a crash, 1 a fire, 4 an injury, according to the filers. NHTSA lists 0 recall campaigns and 13 technical service bulletins for this model year. Electrical system complaints overlap with 8 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Engine cooling: “My 99 XJ8L Jaguar wouldn't start and I took it to a mechanic--he said 4 of my 8 cylinders stopped working and I needed a new engine. I did a vehicle search for my car and found out there was engine problems from the manufacturer its called the nikasil problem - document numbers are s491v6 or v5. I need to know if my car fall under this problem. I kept up with all of the maintenance suggestions( oil change,mileage checkups)., and my engine still failed at 87715 miles.”

NHTSA complaint #10258371, filed 2009-02, 87,815 miles

Electrical system: “While driving, the consumers sunroof automatically opened and a burning smell permeated the cockpit. The consumer pulled over immediately cut the engine off and pulled all the fuses out, however a few minutes later the smoke turned into fire. It shot out from under the sunroof button cluster. The forensic specialist said the cause of fire was the sunroof control module. The consumer informed Jaguar of north america, however they were not concerned and would not further investigate the failed module. A fire report is enclosed. Also the right fog lamp was replaced.”

NHTSA complaint #10019658, filed 2003-07, 57,000 miles

Engine: “Was on us I-280 northbound at about 8 p.m., going prevailing speed, going to a social meeting, but with an organizational director. Heard loud pop and car lurched forward abruptly, then engine began to rattle, smoke and burnt rubber/oil smell began to invade cabin. Husband turned off engine and coasted to side of highway and up exit ramp shoulder. Took the car to delong's auto repair, the only known authorized Jaguar service center for at least 50 miles in any direction. …”

NHTSA complaint #10546670, filed 2013-10, 143,000 miles

Mileage when problems were reported

14% of the 7 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 86,000 and 90,000 miles.

0%0–1014%10–250%25–5014%50–7557%75–10014%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (7 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 87,815 miles.

Complaints by year filed

Fewer than 15 complaints, too few for a reliable trend.

200220032004200522006200820092013
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Fuel economy and running cost

EPA ratings for each 1999 Jaguar XJ8L version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
XJ8L RWD4.0L 8-cyl5-speed automatic152218$4,550

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

NHTSA lists no recall campaigns for the 1999 Jaguar XJ8L in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by VIN at nhtsa.gov/recalls.

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 13 on record; the latest 10 are shown.

See all 13 bulletins →

Other model years of the Jaguar XJ8L

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
1999987,8150—18—Not enough data
19981561,7500—18—Stable

All Jaguar XJ8L model years

Frequently asked questions

How many NHTSA complaints does the 1999 Jaguar XJ8L have?

NHTSA recorded 9 consumer complaints for the 1999 Jaguar XJ8L as of Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 1999 Jaguar XJ8L is reported most often?

Engine cooling is named most often, in 2 complaints (22% of the total), followed by electrical system with 1.

Has the 1999 Jaguar XJ8L been recalled?

NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 1999 Jaguar XJ8L get?

The EPA rates the 1999 Jaguar XJ8L (XJ8L, 4.0L 8-cyl) at 18 mpg combined, 15 city and 22 highway, with an estimated annual fuel cost of $4,550 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 1999 Jaguar XJ8L reported?

Among the 7 complaints that include a mileage, the median is 87,815 miles and the middle half falls between 86,000 and 90,000 miles; 14% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.