| 1 | 0 | 3 | 4 | 3 | 4 |
Jaguar XJ repairs by problem area
Engine (33%)
Transmission and Drivetrain (9%)
Brakes and Traction Control (3%)
Suspension and Steering (25%)
Electrical and Air Conditioning (20%)
Paint, Rust, Leaks, Rattles, and Trim (3%)
Other (6%)
Chart based on 269 repairs.
Jaguar XJ engine repair cost distribution
$2500+ (10%)
$1000 - $2499 (25%)
$500 - $999 (14%)
$100 - $499 (30%)
< $100 (22%)
Chart based on 81 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2014 Jaguar XJ 4dr Sedan, ext.
supercharged 550hp 5.0L V8 8-speed shiftable automatic RWD
| 73000 mi US $5500 |
Leaking front timing chain cover Replaced leaking coolant pipe to super-charger |
2012 Jaguar XJ 4dr Sedan, ext.
385-horsepower 5.0L V8 6-speed shiftable automatic RWD
| 26000 mi US $1500 |
Coolant line went Restricted performance caused by #1 fuel injector failure (stuck open) |
| 26000 mi | Coolant line went again about 1K miles later, was not repaired properly. |
| 26200 mi US $16000 |
#6 fuel injector failed (#1 failed 12 months earlier) |
2007 Jaguar XJ 4dr Sedan, ext.
300-horsepower 4.2L V8 6-speed automatic RWD
| 113490 mi US $2000 |
Engine lost oil pressure. Metal in filter. Installed complete used engine. |
2007 Jaguar XJ 4dr Sedan
300-horsepower 4.2L V8 6-speed automatic RWD
| 75000 mi US $1412 |
Radiator sprung a leak. Radiator and thermostat/thermostat housing were replaced. |
| 41517 mi | replace coolant expansion tank due to failure. (warranty item) |
| 45701 mi US $130 |
Engine hesitation (thought to be due to poor throttle sensor calibration from earlier repair trip). Fuel injection service |
2006 Jaguar XJ 4dr Sedan, ext.
supercharged 400hp 4.2L V8 6-speed automatic RWD
| 48706 mi | Replaced passenger side heater core under warranty. This is a dual climate vehicle. The heater core problem has been well documented due to the aluminum built which tends to block the water flow. |
| 143000 mi US $100 |
Supercharger Aux Pump Fault code 2601 resulted in restricted performance. replaced the pump with a friend and had to remove the front bumper for access. Otherwise repair replacement was a success and have been to Florida and back with no issues at all |
2005 Jaguar XJ 4dr Sedan, ext.
supercharged 390hp 4.2L V8 6-speed automatic RWD
| 67200 mi US $1500 |
Heater core clogged |
| 67200 mi US $1200 |
Radiator connections cracked leaking fuel |
| 139000 mi US $175 |
Replaced downstream oxygen sensor |
| 139000 mi US $125 |
Belt squeak on startup. Change 2 belts. This included blower motor belt. |
| 140300 mi US $850 |
eKnock sensor went bad. located under supercharger, which had to be removed. Two on engine, one bad, both changed. |
| 143000 mi | Lean code. Unable to find it. Smoke tested, will check O2 sensors. The engine light is on. I get RESTRICTED PERFORMANCE within the first mile. But it goes away when I stop and usually does not come back on until I stop and start again. No one seems to be able to find the problem. |
| 64000 mi US $200 |
Aux coolant pump failure. No heat to 3 of 4 climate control zones. |
2005 Jaguar XJ 4dr Sedan, ext.
294-horsepower 4.2L V8 6-speed automatic RWD
| 110000 mi US $550 |
Radiator spider inlet outlet replaced. |
| 110000 mi US $210 |
Engine misfire. Replaced all ignition coils and installed NGK spark plugs. |
| 88000 mi US $1700 |
Throttle Body sensor was replaced Thermostat and water pump replaced. |
| 109000 mi US $457 |
Replace coil on #6 |
| 99200 mi C $2200 |
water leak, engine malfunction - replaced waterpump, thermostat and housing. |
| 178892 mi US $14000 |
Replaced engine (long block), |
| 201000 mi US $4700 |
Heater core blocked, no heat. |
| 50000 mi | Engine was suffering rough starts. Problem was traced to damaged fuel injectors (6 out of 8 cylinders). Injectors were ultrasonically cleaned, but remained pitted. Traded for a 2012 XJ. |
2005 Jaguar XJ 4dr Sedan
supercharged 390hp 4.2L V8 6-speed automatic RWD
| 107200 mi C $1300 |
Cooling hose under the supercharger was perforated. |
| 150000 mi US $400 |
Cooling pipe leaked |
| $1800 | Radiator change due to radiator leak. Air Filter housing change due to broken latches not securing filter housing properly |
| 35916 mi $1300 |
Engine Fan failure. Replaced |
| 45416 mi $1800 |
Throttle body failure. Replaced |
| 49600 mi | Slow oil leak from sump area of engine. Gaskets replaced and car serviced. Transmission cooler leak into radiator. Radiator was replaced. Radiator was only about 15 months old and was replaced previously in 2009 due to a leak. |
| 49600 mi | While waiting for new radiator and oil seals, supercharger seals and ?waste gate were replaced as they were worn / leaking. |
| 60140 mi | Supercharger replacement due to loud bearing whine. |
| 66960 mi $1500 |
Oil leak from engine |
| 80380 mi $1800 |
Both knock sensors replaced due to error code. Changed the under-supercharger water hose at the same time since the supercharger needs to come out to replace the knock sensors. All other water hoses that were difficult to reach also changed. |
| 82460 mi $650 |
Replaced oxygen sensors and installed uprated front anti-roll bar. |
| 83700 mi $500 |
Supercharger coolant pump was malfunctioning intermittently. Pump was replaced with an uprated unit. |
| 89900 mi $15 |
Replaced radiator cap |
| 92380 mi $3500 |
Fuel injector failure, then while fuel injectors were being replaced, mechanic noticed that there was an oil leak from the supercharger so supercharger seals had to be replaced. |
2004 Jaguar XJ 4dr Sedan
supercharged 390hp 4.2L V8 6-speed automatic RWD
| 61380 mi | one idler pulley with belts |
| 70960 mi C $3000 |
all coolant hoses and seals replaced, beneath the supercharger. |
| 77500 mi C $1400 |
waterpump and belt replaced..also 4 new tires |
| 96720 mi C $2000 |
Mostly PM-spark plugs, coils, cleaned throttle body. |
| 113000 mi US $115 |
Transmission fault related to leak. Reset of fault and re-adaptation of the transmission. Dealer claimed needed new transmission, $6,200. Spent 30 hours researching ZF6HP26, learn only needed reset to adaptation mode. Also paid dealer and trans shop $245. |
| 139000 mi US $285 |
Developed a lower engine oil pan gasket leak. Had shop (Sun Auto, Georgetown, TX) replace lower pan gasket. Also, shop replaced Z transmission pan bolts as the factory bolts striped out from a prior gasket replacement. Good shop & price. |
| 147000 mi US $2500 |
Lower oil pan gasket leaking. Replaced. |
| 168000 mi US $1100 |
Broken lead to left bank engine cam position sensor. New sensor was installed and local sensor connector was bypassed by soldering. |
| 113500 mi US $400 |
Faulty sensor and single hose replacement |
| 128000 mi US $2100 |
Coolant Leak, All hoses and reservoir replaced. |
| 128700 mi US $825 |
Vacuum leak, required replacing tube and valves beside supercharger. |
| 104000 mi US $453 |
No start due to water/ice in cylinders. This is a rare but not unheard of problem with these supercharger cars on very cold nights (0F). Repair included a new starter. |
| 104000 mi US $295 |
The electric water pump for the heater had failed. It was replaced. |
| 109000 mi US $10 |
Vacuum leak in air intake |
| 116000 mi US $100 |
Replaced all coil packs. Flushed cooling system to attempt to get more heat. Somewhat successful. |
| 56000 mi US $1500 |
Coolant return hose from throttle body that was under the supercharger was replaced. Windshield washer pump replaced. Faulty door speakers (all 4) replaced. |
2004 Jaguar XJ 4dr Sedan
294-horsepower 4.2L V8 6-speed automatic RWD
| 145000 mi US $100 |
Tensioner and Idle Pulley bearings were worn, replaced both pulleys and belt. |
| 158200 mi US $10 |
Low coolant warning is now on full time. No coolant loss detected. replaced sensor with no satisfactory results. Replaced oil and filter, old filter was loose which was cause of oil leak. Disconnected low coolant sensor. |
| 137000 mi | Oil leak |
| 140000 mi | Oil leak never fixed |
| 46000 mi US $300 |
poor heat. plugged heater core. owner decided to try a flush instead of replacement - didn't want the dash coming apart to replace core. Flush somewhat successful. will end up replacing core at a later date. |
| 59000 mi | Partially plugged heater core. |
| 47300 mi | I had a check engine light: dirty MAF which I cleaned with MAF cleaner. Everything was fine. |
| 82000 mi US $550 |
Engine Coolant Reservoir replaced Replaced Engine Coolant Reservoir |
| 21300 mi | flash transmission for flaring between shifts |
| 29000 mi US $72 |
reflash transmission for poor cold operation |
| 50000 mi US $115 |
replaced leaking coolant overfow tank |
| 69000 mi US $137 |
replaced coolant manifold and thermostat housing (all one piece) for active coolant leak. |
| 77000 mi US $220 |
replaced throttle body because of hesitation |
| 69000 mi US $800 |
Thermostat housing replaced. |
| 73000 mi US $300 |
Replace MAF and TPS and throttle body |
| 81000 mi US $100 |
Replace coolant reservoir tank. |
| 86000 mi | Check engine light on. Shop indicated air box and intake tube needed replacement. Check engine light still on after trip to shop. Investigated myself, found cracked vacuum tube. Repaired myself, fixed. |
| 118200 mi US $50 |
Oil change, retightened newly installed radiator hoses |
| 46500 mi $480 |
Steering lock motor failed. Unable to start car. |
| 93000 mi US $1024 |
Replaced cracked breather hose. Tuneup - spark plugs replaced, injectors cleaned. P/S fluid flushed. Also, |
| 51100 mi US $589 |
remove and replace thermostat, housing and expansion tank |
| 55100 mi US $3600 |
serpentine belt replacement valve cover gasket replacement reseat new spark plugs |
| 69000 mi US $1200 |
plugs and coils were replaced after tow due to "CEL" and "restricted performance" message |
2003 Jaguar XJ 4dr Sedan
280-horsepower 4.0L V8 5-speed automatic RWD
| 39700 mi US $500 |
Cleaning of TBI, Injector Test, Sensors (MAF Cleaning). Finalize work. |
2001 Jaguar XJ 4dr Sedan, ext.
290-horsepower 4.0L V8 5-speed automatic RWD
| 82000 mi US $200 |
replaced passenger side engine valve cover and seal |
See TrueDelta's information for all Sedans
See TrueDelta's information for all Jaguar models.
