MOT Status
ExpiredMileage
173,323 miSignificantly above average — investigate
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Vehicle Details
All premium checks include
50+ data pointsMOT History
Exhaust emissions carbon monoxide content excessive (7.3.B.1a)
How Reliable is the Proton Gls?
Based on 3,834 MOT tests across 963 vehicles.
Top MOT Failure Points
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J991 BYB is a 1991 Proton Gls in Silver with a 1,500cc petrol engine. This vehicle has been through 3 MOT tests with a personal pass rate of 66.7%.
Across all 1991 Proton Gls models, the average MOT pass rate is 68.5% with a typical mileage of 77,610 miles. This particular vehicle has a lower pass rate than the average for its year, which may indicate maintenance issues worth investigating.
The most common reason a Proton Gls fails its MOT is constant velocity joint gaiter split, accounting for 382 recorded failures. If you're considering buying J991 BYB, it's worth having these areas checked by a mechanic before committing.
The Proton Gls typically stays on UK roads for around 37 years. At 35 years old, this Proton Gls is approaching the upper end of the typical lifespan for this model.
Frequently Asked Questions
How do I check the history of J991 BYB?
You can check the full history of J991 BYB by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.
What year was J991 BYB registered?
J991 BYB is a 1991 Proton Gls, first registered on 29 August 1991.
Is J991 BYB safe to buy?
The MOT history for J991 BYB shows 3 tests with a 66.7% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.
Does J991 BYB have outstanding finance?
Finance checks require a premium vehicle report. This checks against all major UK finance providers to see if there is any outstanding finance on J991 BYB. If you buy a car with outstanding finance, the finance company can repossess it.
No warranty or guarantee of accuracy is provided for any free data on this page. The data guarantee applies only to information obtained through the purchase of a full check.