JAGUAR XJ (2004)
Running costs, common problems, and reliability data based on 3,267 real MOT tests in 2024.
MOT Pass Rate
78%
Total Tests (2024)
3,267
Avg Mileage
108,216 mi
Est. Annual Cost
£2,397
Is the 2004 JAGUAR XJ reliable?
Average reliability. Expect some repairs as it ages. That's close to the national average of 82%. It falls below the JAGUAR brand average of 88%.
At 20 years old, 78% of JAGUAR XJs from 2004 passed their MOT first time in 2024. That's based on 3,267 tests across the UK. The average mileage at this age is 108,216 miles.
How does the 2004 JAGUAR XJ compare?
Mileage Analysis
The average 2004 JAGUAR XJ has 108,216 miles on the clock, which is below the expected 148,000 miles for a 20-year-old car. This suggests lighter use than average, which generally means less wear on major components.
Best year to buy a JAGUAR XJ?
The most reliable year is the 2019 model with a 94% MOT pass rate, while the 2002 model has the lowest at 77%. The 2004 sits between the two at 78%.
How much does a 2004 JAGUAR XJ cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
JAGUAR XJ by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2020 | 92% | 411 | 32,227 mi |
| 2019 | 94% | 1,023 | 35,571 mi |
| 2018 | 93% | 1,682 | 44,709 mi |
| 2017 | 93% | 2,143 | 54,518 mi |
| 2016 | 91% | 2,811 | 64,986 mi |
| 2015 | 91% | 2,316 | 67,462 mi |
| 2014 | 89% | 2,511 | 81,854 mi |
| 2013 | 87% | 2,758 | 93,880 mi |
| 2012 | 89% | 2,482 | 93,337 mi |
| 2011 | 84% | 4,043 | 100,648 mi |
| 2010 | 84% | 3,442 | 107,407 mi |
| 2009 | 85% | 1,332 | 97,971 mi |
| 2008 | 82% | 2,030 | 101,627 mi |
| 2007 | 82% | 2,721 | 103,444 mi |
| 2006 | 82% | 2,874 | 103,550 mi |
| 2005 | 80% | 2,105 | 106,159 mi |
| 2004 | 78% | 3,267 | 108,216 mi |
| 2003 | 81% | 3,134 | 110,063 mi |
| 2002 | 77% | 955 | 92,681 mi |
| 2001 | 79% | 972 | 91,862 mi |
| 2000 | 78% | 888 | 90,401 mi |
| 1999 | 77% | 1,298 | 91,922 mi |
| 1998 | 77% | 2,154 | 92,573 mi |
| 1997 | 80% | 2,029 | 105,434 mi |
| 1996 | 82% | 1,861 | 104,724 mi |
| 1995 | 79% | 1,401 | 101,040 mi |
| 1994 | 86% | 635 | 87,486 mi |
| 1993 | 82% | 401 | 88,629 mi |
| 1992 | 82% | 328 | 89,641 mi |
| 1991 | 82% | 243 | 95,193 mi |
| 1990 | 86% | 282 | 83,101 mi |
Checking a specific JAGUAR XJ?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2004 JAGUAR XJ
The 2004 JAGUAR XJ is a premium performance with a 3555cc petrol engine. 3,267 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2004, the average MOT pass rate is 72%, and this model beats that benchmark.
With an average of 108,216 miles at 20 years old, JAGUAR XJ owners tend to use this car less than the typical driver.
2004 JAGUAR XJ Fuel Costs
The 3555cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2004 JAGUAR XJ?
Total estimated annual running cost is £2,397 (£200/month), broken down as £1592 fuel, £250 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 78% pass rate. Keeping on top of servicing will help avoid surprises.
JAGUAR XJ Reliability Trend
Newer JAGUAR XJs show better MOT pass rates than older ones, with an average improvement of 7 percentage points.
Buying a Used 2004 JAGUAR XJ
At 20 years old, the JAGUAR XJ is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2019 model has the highest pass rate at 94%.
Alternatives to the 2004 JAGUAR XJ
If reliability is your priority, there are 2 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- LAND ROVER FREELANDER (2006) 70% pass rate (-8%) from 12,591 tests
- MERCEDES E (2004) 78% pass rate (same) from 8,333 tests
- PORSCHE BOXSTER (2005) 86% pass rate (+8%) from 6,992 tests
- PORSCHE 911 (2006) 90% pass rate (+12%) from 6,184 tests