DVSA Statistics
1979 Jaguar Xj
MOT Pass Rate & Pre-MOT Checklist
There isn't much MOT data yet for the 1979 Jaguar Xj (only 9 tests in our DVSA dataset), so these figures are a rough guide. We still highlight common failure items below so you can check before your MOT.
Pass Rate
Based on 9 DVSA anonymised MOT tests · About this data
Pass Rate
88.9%
Higher than average
Limited data available for this model; results may be less representative.
Top Failure Reasons
Common MOT failures for this model
Quick DIY Fix
Wiper blades are a common fail on XJs. Quick 5-minute fix.
Based on DVSA statistics from 9 recorded tests.
Pre-MOT Checklist for 1979 Jaguar Xj
Based on common failure points for this model, check these items before your MOT:
- 1
Check wiper blades for wear, cracks, and smearing - replace if damaged
Visibility – Common fail on this model
- 2
Check tyre tread depth is at least 1.6mm across the central 3/4 of the tyre
Tyres – Common fail on this model
- 3
Listen for knocks or clunks when driving over bumps - bounce each corner
Suspension – Common fail on this model
- 4
Test brakes for effectiveness, pull, and unusual noises when driving
Brakes – Common fail on this model
How Does This Compare to Other Years?
Previous Year
1978 Jaguar Xj
Based on 29 UK MOT tests
Next Year
1980 Jaguar Xj
Based on 5 UK MOT tests
The 1979 model has a lower pass rate than 1978, but performs better than 1980.
Why Trust This Data?
Official UK Government Source
This data comes from the UK's Driver and Vehicle Standards Agency (DVSA), the official body responsible for MOT testing standards. The anonymised MOT test data is published via data.gov.uk.
Understanding the Statistics
This page is based on 9 MOT tests from the 2023 DVSA dataset. Your 1979 Jaguar Xj was 44 years old when this data was collected and is now 47 years old.
Sample Size
Limited data - 9 tests (use as rough guide only)
Limitations
Statistics reflect average outcomes and don't account for maintenance history, mileage, or regional variations. Individual results will vary based on how well a vehicle has been maintained.
Do you own this car?
Check your specific vehicle for outstanding advisories or recalls. Get a personalized risk report for your exact Jaguar Xj.
Frequently Asked Questions
Is a 1979 Jaguar Xj likely to fail its MOT?
Based on DVSA statistics, the 1979 Jaguar Xj has a 88.9% MOT pass rate. This is above average, indicating good reliability for a vehicle of this age.
What are the most common MOT failures on a 1979 Jaguar Xj?
The most common MOT failure reasons for a 1979 Jaguar Xj are: wiper blade missing or obviously not clearing the windscreen, tyres on the same axle or on twin wheels are different sizes, a suspension joint dust cover missing or no longer prevents the ingress of dirt etc. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1979 Jaguar Xj fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: wiper blade missing or obviously not clearing the windscreen, tyres on the same axle or on twin wheels are different sizes, a suspension joint dust cover missing or no longer prevents the ingress of dirt etc. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1979 Jaguar Xjs fail their MOT?
Around 11% of 1979 Jaguar Xjs fail their MOT test, meaning roughly 1 in 9 don't pass first time. The most common reasons are wiper blade missing or obviously not clearing the windscreen and tyres on the same axle or on twin wheels are different sizes. Pre-checking these items can significantly improve your chances.
What should I check before my 1979 Jaguar Xj MOT?
Before your 1979 Jaguar Xj MOT, check these commonly-failed items: wiper blade missing or obviously not clearing the windscreen, tyres on the same axle or on twin wheels are different sizes, a suspension joint dust cover missing or no longer prevents the ingress of dirt etc. Most are visual checks you can do at home – look for worn tyres, test all lights work, and check for obvious damage or leaks.
Is the 1979 Jaguar Xj reliable for MOT?
With a 88.9% MOT pass rate, the 1979 Jaguar Xj performs above average compared to typical vehicles. This suggests good overall condition for a vehicle of this age.