JAGUAR XJS (1991)
Running costs, common problems, and reliability data based on 659 real MOT tests in 2024.
MOT Pass Rate
85%
Total Tests (2024)
659
Avg Mileage
82,709 mi
Est. Annual Cost
£2,247
Is the 1991 JAGUAR XJS reliable?
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.
At 33 years old, 85% of JAGUAR XJSs from 1991 passed their MOT first time in 2024. That's based on 659 tests across the UK. The average mileage at this age is 82,709 miles.
How does the 1991 JAGUAR XJS compare?
Mileage Analysis
The average 1991 JAGUAR XJS has 82,709 miles on the clock, which is significantly below the expected 244,200 miles for a 33-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
Best year to buy a JAGUAR XJS?
The most reliable year is the 1995 model with a 89% MOT pass rate, while the 1992 model has the lowest at 78%. The 1991 sits between the two at 85%.
How much does a 1991 JAGUAR XJS 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 XJS by Year
Checking a specific JAGUAR XJS?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 1991 JAGUAR XJS
The 1991 JAGUAR XJS is a premium performance with a 5343cc petrol engine. 659 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 1991, the average MOT pass rate is 78%, and this model beats that benchmark.
With an average of 82,709 miles at 33 years old, JAGUAR XJS owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
1991 JAGUAR XJS Fuel Costs
The 5343cc 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 1991 JAGUAR XJS?
Total estimated annual running cost is £2,247 (£187/month), broken down as £1592 fuel, £250 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 85% pass rate. Keeping on top of servicing will help avoid surprises.
JAGUAR XJS Reliability Trend
Newer JAGUAR XJSs show better MOT pass rates than older ones, with an average improvement of 4 percentage points.
Buying a Used 1991 JAGUAR XJS
At 33 years old, the JAGUAR XJS 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 1995 model has the highest pass rate at 89%.
Alternatives to the 1991 JAGUAR XJS
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- MERCEDES 500 (1991) 87% pass rate (+2%) from 356 tests
- MERCEDES SL (1991) 86% pass rate (+1%) from 288 tests
- JAGUAR XJ (1990) 86% pass rate (+1%) from 282 tests
- PORSCHE 928 S (1991) 81% pass rate (-4%) from 181 tests