Leyland Unknown Reliability, MOT Pass Rate & Common Faults
Free Leyland Unknown car check
Is the Leyland Unknown reliable? We analysed 334 real MOT tests across 176 vehicles to find out.
Got a specific Leyland Unknown? Enter the reg for a free check:
The Leyland Unknown is above average for reliability based on real UK MOT data. Common problems include windscreen washer provides insufficient washer liquid, windscreen wiper does not clear the windscreen effectively and fog lamp not working. Here's everything you need to know before buying a used Leyland Unknown.
Leyland Unknown Number Plates
Number plates registered to a Leyland Unknown. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Leyland Unknown MOT Pass Rate by Year
How likely is a Leyland Unknown to pass its MOT? Here's the pass rate for each registration year, newest first.
Leyland Unknown Problems — What Goes Wrong?
The most common reasons a Leyland Unknown fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Leyland Unknown MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Leyland Unknown year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1985 | 68 | 83.8% | 24,200 | 74,863 | 543,322 |
How Long Does a Leyland Unknown Last?
Based on 176 Leyland Unknown vehicles on UK roads.
Leyland Unknown Mileage Distribution
Total mileage recorded across all Leyland Unknown MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used Leyland Unknown
Based on MOT pass rates across all registration years with sufficient test data.
83.8% MOT pass rate from 68 tests
The best year to buy a used Leyland Unknown is 1985, which has the highest MOT pass rate at 83.8% across 68 tests.
How Does the Leyland Unknown Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Leyland Unknown THIS CAR | 75.4% | 334 | 98,798 mi | 41 yrs |
| Leyland Olympian | 80.9% | 507 | 111,468 mi | 38 yrs |
| Leyland Daf | 62.3% | 494 | 98,626 mi | 35 yrs |
| Audi S5 Black ED TDI MHEV QUATTRO A | 88.7% | 450 | 30,112 mi | — yrs |
| Toyota RAV4 Dynamic HEV 4X2 CVT | 97% | 198 | 42,304 mi | — yrs |
Compared to the Leyland Olympian (80.9% pass rate) and the Leyland Daf (62.3% pass rate), the Leyland Unknown sits in the middle of the pack on MOT reliability.
Found a Leyland Unknown you like?
Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Leyland UnknownShould you buy a used Leyland Unknown?
The Leyland Unknown has an overall MOT pass rate of 75.4% across 334 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common problems on the Leyland Unknown are windscreen washer provides insufficient washer liquid (8 recorded failures), windscreen wiper does not clear the windscreen effectively (5), and fog lamp not working (3). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
In terms of longevity, most Leyland Unknown models stay on UK roads for around 41 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.