2004 Jaguar XJ8 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
54 owner complaints analyzed
0 distinct recall campaigns
50,000 mi median reported failure mileage
Scope: 2004 model year. Data snapshot: . 43 complaints include usable failure mileage.
Most common problems
Suspension is the most frequently named component, appearing in 12 of 54 complaints (22.2%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 20 | 37.0% |
| Transmission and shifting | 9 | 16.7% |
| Electrical and battery issues | 5 | 9.3% |
| Steering behavior | 3 | 5.6% |
| Engine operation | 2 | 3.7% |
| Fuel system concerns | 1 | 1.9% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Suspension | 12 |
| Vehicle Speed Control | 8 |
| Engine | 5 |
| Power Train:Automatic Transmission | 5 |
| Service Brakes, Hydraulic | 5 |
| Vehicle Speed Control:Accelerator Pedal | 4 |
| Electrical System | 3 |
| Structure:Body | 3 |
Suspension: 12; Vehicle Speed Control: 8; Engine: 5; Power Train:Automatic Transmission: 5; Service Brakes, Hydraulic: 5; Vehicle Speed Control:Accelerator Pedal: 4; Electrical System: 3; Structure:Body: 3
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 15 |
| 25,000 to 49,999 | 6 |
| 50,000 to 74,999 | 8 |
| 75,000 to 99,999 | 8 |
| 100,000 to 149,999 | 5 |
| 150,000 and above | 1 |
Under 25,000: 15; 25,000 to 49,999: 6; 50,000 to 74,999: 8; 75,000 to 99,999: 8; 100,000 to 149,999: 5; 150,000 and above: 1
Under 25,000 miles has the most reports with usable mileage (15). 11 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2003 | 1 |
| 2004 | 4 |
| 2005 | 7 |
| 2006 | 1 |
| 2007 | 4 |
| 2008 | 7 |
| 2009 | 3 |
| 2010 | 6 |
| 2011 | 4 |
| 2012 | 2 |
| 2013 | 4 |
| 2014 | 3 |
| 2015 | 2 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 2 |
| 2023 | 1 |
2003: 1; 2004: 4; 2005: 7; 2006: 1; 2007: 4; 2008: 7; 2009: 3; 2010: 6; 2011: 4; 2012: 2; 2013: 4; 2014: 3; 2015: 2; 2017: 1; 2018: 2; 2019: 2; 2023: 1
Pattern summary
Suspension leads the component reports. Braking behavior appears in 20 complaint narratives. Transmission and shifting appears in 9 complaint narratives. Electrical and battery issues appears in 5 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10071916 · 2004-04-29 (April 29, 2004)
VEHICLE EQUIPPED WITH A LEVER ON THE CENTER CONSOLE TO ELECTRONICALLY SET THE EMERGENCY BRAKES RATHER THAN THE MORE TYPICAL SPRING LOADED FOOT PEDAL USED TO SET THE BRAKE. *PH THE CONSUMER WAS UNAWARE OF THIS UNTIL ONE DAY WHILE DRIVING AT 60 MPH ALL FOUR WHEELS LOCKED UP AND THE VEHICLE SKIDDED TO A STOP. *JB
Owner-reported narrative. Look up ODI 10071916 at NHTSA ↗
Owner report 10107929 · 2005-01-26 (January 26, 2005)
POSSIBLE DEFECTIVE REAR BRAKES SYSTEM IN 2004 JAGUAR XJ-8 CAUSING PREMATURE PAD WEAR, REPLACEMENT, SERVICES TO RELATED PARTS WHICH DEALER DESCRIBES AS "NORMAL WEAR AND TEAR". REAR BRAKE PADS SHOULD NOT NEED REPLACEMENT AT 20,000 MILES UNLESS .*AK
Owner-reported narrative. 20,000 miles reported. Look up ODI 10107929 at NHTSA ↗
Owner report 10089122 · 2004-08-12 (August 12, 2004)
PROBLEMS WITH 2004 JAGUAR XJ8 TRANSMISSION.*MR TRANSMISSION FLUID WAS LEAKING DUE TO A FAULTY OUTPUT FLANGE AND SEAL. THE TRANSMISSION ALSO LEAKED. THE CONSUMER RESEARCHED THE NHTSA WEBSITE AND FOUND TWO RECALL. ONE WAS FOR THE AUTOMATIC TRANSMISSION AND THE OTHER ONE WAS FOR THE FRONTAL AIR BAGS. THE CONSUMER WOULD LIKE TO KNOW IF HER VEHICLE IS PART OF OR POTENTIALLY COULD BE PART OF THE SAFETY RECALL. *NM
Owner-reported narrative. 3,555 miles reported. Look up ODI 10089122 at NHTSA ↗
Owner report 10126516 · 2005-06-24 (June 24, 2005)
DT: 2004, JAGUAR, XJ8. VEHICLE HAD TO HAVE THE BRAKES AND TRANSMISSION REPLACED. ALSO, VEHICLE NEEDED A NEW STARTER BECAUSE THE KEY WILL NOT COME OUT OF THE IGNITION. AFTER VEHICLE WAS TAKEN TO THE DEALERSHIP THE CATALYTIC CONVERTER MADE A POPPING NOISE. THERE WERE NO OTHER PROBLEMS WITH THE VEHICLE TO THE BEST OF THE CONSUMERS KNOWLEDGE. CONSUMER FELT THAT THE MECHANICS WORKING ON VEHICLE WERE GUESSING AS TO THE CAUSE OF THE PROBLEM WITHOUT SOLVING THE PROBLEM, CONSUMER TOOK VEHICLE BACK TO THE DEALER 12 TIMES SINCE PU…
Owner-reported narrative. Look up ODI 10126516 at NHTSA ↗
Owner report 10094976 · 2004-11-03 (November 3, 2004)
THE POWER WINDOW ON DRIVER'S SIDE STOPPED OPERATING WHILE IN THE UP POSITION. VEHICLE STALLED ON TWO OCCASIONS WHILE DRIVING AT 35 MPH AND 65 MPH. VEHICLE RESTARTED ON BOTH OCCASIONS, AND THE VEHICLE WOULD VIBRATE SEVERELY WHILE DRIVING 50 MPH. CONSUMER STATED VEHICLE HAD BEEN TO THE DEALER 8-10 SEPARATE TIMES, BUT PROBLEM RECURRED. *AK THE ELECTRICAL SSTEM HAS PROBLEMS. RADIO CHANGES FUNTIONS FROM AM TO FM TO CD BY ITSELF WITHOUT CONSUMER INPUT. WINDOWS GO DOWN WITHOUT THE CONSUMERS INPUT AND WILL NOT CLOSE. INTERIOR LIGHTS DO NOT WORK W…
Owner-reported narrative. 1,000 miles reported. Look up ODI 10094976 at NHTSA ↗
Owner report 10185950 · 2007-03-22 (March 22, 2007)
THIS JAGUAR 2004 XJ8 HAS BEEN SUBJECT TO 6 UNINTENDED ACCELERATONS OVER A PERIOD OF HALF A YEAR INCLUDING TWO IN THE DEALER'S SHOP. WHEN IN TRAFFIC OR CLOSE QUARTERS IT HAS BEEN NECESSARY TO PLACE THE SHIFTER IN NEUTRAL OR REVERSE TO CONTROL THE ACCELERATION. THE DEALER HAS HAD THE CAR IN HIS SHOP ON THREE OCCASIONS. ON THE FIRST OCCASION NOTHING WAS FOUND. ON THE SECOND OCCASION IT WAS SAID THAT THE FUEL PUMP OR ITS WIRING HARNESS WERE FAULTY AND WERE REPLACED. ON THE PRESENT OCCASION IT WAS THOUGHT THAT POSSIBLY THIS WAS A TRANSMISSI…
Owner-reported narrative. 18,000 miles reported. Look up ODI 10185950 at NHTSA ↗
Owner report 10342500 · 2010-07-11 (July 11, 2010)
WHILE DRIVING ON 95 SOUTH IN RI AT APPROX. 60MPH, MY 2004 JAGUAR XJ8 SUDDENLY LOST ALL POWER, INCLUDING ENGINE, STEERING AND BRAKING ABILITIES. IT NEARLY RESULTED IN A MULTI CAR FATAL ACCIDENT FROM BEING HIT FROM BEHIND. THE DEALER STATED, AFTER A SYSTEMS CHECK, THAT AN ACCELERATOR PEDAL SENSOR HAD FAILED RESULTING IN A $500.00 REPLACEMENT COST. THIS IS A VERY DANGEROUS DEFECT THAT SHOULD HAVE BEEN PART OF A SAFETY RECALL. *TR
Owner-reported narrative. 73,000 miles reported. Look up ODI 10342500 at NHTSA ↗
Owner report 11081032 · 2018-03-23 (March 23, 2018)
TL* THE CONTACT OWNS A 2004 JAGUAR XJ8. WHILE DRIVING APPROXIMATELY 5 MPH, THE TRANSMISSION FAILED TO SHIFT UP AND THE ENGINE STALLED. THE VEHICLE WAS ABLE TO BE RESTARTED. THE VEHICLE WAS NOT TAKEN TO A DEALER. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT THERE WAS NO RECALL. THE FAILURE MILEAGE WAS NOT AVAILABLE.
Owner-reported narrative. Look up ODI 11081032 at NHTSA ↗