Most common 2006 Jaguar XJ problems
Share of the 17 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Jaguar XJ complaints by model year
Best XJ years: 2010, 2017, 2008. Years to avoid: 2005, 2006. Compare all years →
2006 Jaguar XJ recalls (3)
Fuel system, gasoline › Storage › Tank assembly
Some passenger vehicles May have fuel tanks in which the fuel delivery module (fdm), jet pump module (jpm, and/or cluster valve (cv) seals are not properly retained in the fuel tank. This May result in illumination of the malfunction indicator lamp (MIL), or a fuel odor.
Remedy: Dealers will replace the fuel tanks free of charge. The recall began on October 31, 2006. Owners May contact Jaguar at 1-800-452-4827.
Visibility › Sun/moon roof assembly
On certain sedans equipped with moonroofs, a reinforcement bar was incorrectly assembled so that the bar May contact the glass in the moonroof. When closing a door or upon severe road impact, it is possible that the moonroof glass May shatter.
Remedy: Dealers will replace the moonroof free of charge. The recall began on March 27, 2006. Owners May contact Jaguar at 1-800-452-4827.
Power train › Automatic transmission › Gear position indication (PRNDL)
Certain sedans May have been built with an incorrectly manufactured automatic transmission parking pawl guide plate.
Remedy: Dealers will replace the parking pawl guide plate free of charge. The recall began November 22, 2005. Owners May contact Jaguar at 1-800-452-4827.
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2006 Jaguar XJ:
Fuel tank leakage
The office of defects investigation (odi) opened pe06-030 based on three complaints alleging large quantities of gasoline leakage from the fuel tanks (not from the filler pipes) of model year (my) 2006 Jaguar xj vehicles. On September 11, 2006, Ford motor company submitted a defect notice (part 573) to NHTSA describing a defect condition that could result in leakage from one or more of three sealed apertures on the…
What 2006 Jaguar XJ owners say
Fuel & propulsion system
While stopped in the road waiting for another car. With foot on brake, the car suddenly goes full throttle. Driver has both feet applied on the brake and the car still moves forward burning rubber, and then after a few seconds it goes back to idle. The car does this once or twice a year, the last time doing damage to a car in front of it. This is the fifth time this has happened. The car is idling normally with the right foot on the brake and it will just go full throttle all by itself. It has happened enough that we know we do not have both the brake and the gas pedal depressed. From doing online research I believe Jaguar and Toyota / Lexus used the same system for controlling acceleration. I replaced the throttle body after the fender bender, it evidently did not help.
While being stopped at a stop sign with foot on brake the car suddenly accelerates. This is the 5th time this has happened, one time resulting in an accident. I have called Jaguar and they blame the driver. I replaced the throttle which contained the same tps sensor that has plagued toyotas. I am going to replace the pedal sensor and if that doesn't work I guess I will sell the car. Each time this happens the car is stopped with the right foot on the brake. The accident was at a school waiting in a line of stopped vehicles waiting to pickup students.
Engine & cooling
While stopped in the road waiting for another car. With foot on brake, the car suddenly goes full throttle. Driver has both feet applied on the brake and the car still moves forward burning rubber, and then after a few seconds it goes back to idle. The car does this once or twice a year, the last time doing damage to a car in front of it. This is the fifth time this has happened. The car is idling normally with the right foot on the brake and it will just go full throttle all by itself. It has happened enough that we know we do not have both the brake and the gas pedal depressed. From doing online research I believe Jaguar and Toyota / Lexus used the same system for controlling acceleration. I replaced the throttle body after the fender bender, it evidently did not help.
Tl* the contact owns a 2006 Jaguar xj8 (n/a). The contact stated that while driving approximately 50mph the vehicle began to overheat and the power steering failed. The vehicle was towed to a mechanic who stated the belt tensioner and crankshaft were defective. The vehicle was taken to a Jaguar dealer. They stated that the crankshaft pulley was defective and had come loose. They told him that the engine needed to be replaced at a cost of $14,000.00. The extended warranty company would not cover the repairs. The failure mileage and current mileage was approximately 80,000.
Brakes
The contact owns a 2006 Jaguar XJ. The contact stated that while driving at 45 MPH, the vehicle abruptly decelerated, after which the contact became aware that the parking brake had been applied. The parking brake warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the electronic parking brake control module. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 04V488000 (Parking), but the VIN was not included. The failure mileage was 113,000.
Upon entering garage of home, while pressing on brakes preparing to park, engine accelerated forcing car to crash into a ladder in front of concrete wall; although husband pushed full force on brakes, the car seemed to race forward. No one was hurt, front right bumper plastic panel popped off. Earlier on same day, while slowing down for traffic, although I pushed on brakes, car did not seem to respond. I was able to maintain control of car since I was traveling at low rate of speed.
2006 Jaguar XJ engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 4.2L 8-cyl | 6-speed automatic | RWD | 16 / 25 / 19 |
EPA ratings. Class: Large car.
Frequently asked questions
Is the 2006 Jaguar XJ a good car?
Based on 17 owner complaints filed with NHTSA, the 2006 XJ rates use caution: 1.7× as many complaints as a typical year of the XJ at the same age. It is one of the XJ years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2006 Jaguar XJ?
The fuel & propulsion system — 9 complaints, 53% of all complaints for this model year, most often about storage › tank assembly. Next are the engine & cooling (3) and brakes (3).
How many recalls does the 2006 Jaguar XJ have?
There are 3 recalls for the 2006 Jaguar XJ, the most recent from September 19, 2006 (tank assembly). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Jaguar XJ?
The best years by complaints, compared at the same age, are 2010, 2017 and 2008. Years to avoid or approach with caution: 2005 and 2006. See the full Jaguar XJ years comparison.
At what mileage do 2006 Jaguar XJ problems happen?
The median mileage reported in complaints is about 15,000 miles; 60% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.