Vauxhall Unknown Reliability, MOT Pass Rate & Common Faults
Free Vauxhall Unknown car check
Is the Vauxhall Unknown reliable? We analysed 878 real MOT tests across 250 vehicles to find out.
Got a specific Vauxhall Unknown? Enter the reg for a free check:
The Vauxhall Unknown is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Vauxhall Unknown.
Vauxhall Unknown Number Plates
Number plates registered to a Vauxhall Unknown. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Vauxhall Unknown MOT Pass Rate by Year
How likely is a Vauxhall Unknown to pass its MOT? Here's the pass rate for each registration year, newest first.
Vauxhall Unknown Problems — What Goes Wrong?
The most common reasons a Vauxhall Unknown fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Vauxhall Unknown Common Faults & Problems
These are the most common serious faults found on Vauxhall Unknown models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Vauxhall Unknown Mileage — What's Normal?
How many miles does a typical Vauxhall Unknown owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Vauxhall Unknown MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Vauxhall Unknown year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2017 | 118 | 87.3% | 21,326 | 26,597 | 36,212 |
| 2015 | 107 | 80.4% | 17,465 | 27,825 | 46,544 |
| 2014 | 80 | 71.3% | 24,202 | 40,096 | 87,044 |
| 2013 | 51 | 84.3% | 27,245 | 58,707 | 83,804 |
| 2008 | 59 | 67.8% | 61,974 | 92,749 | 149,432 |
How Long Does a Vauxhall Unknown Last?
Based on 250 Vauxhall Unknown vehicles on UK roads.
Vauxhall Unknown Mileage Distribution
Total mileage recorded across all Vauxhall 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 Vauxhall Unknown
Based on MOT pass rates across all registration years with sufficient test data.
87.3% MOT pass rate from 118 tests
67.8% MOT pass rate from 59 tests
The best year to buy a used Vauxhall Unknown is 2017, which has the highest MOT pass rate at 87.3% across 118 tests. The 2008 model year has the lowest pass rate at 67.8% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Vauxhall Unknown Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Vauxhall Unknown THIS CAR | 78.4% | 878 | 44,549 mi | 18 yrs |
| Vauxhall Corsa | 69.7% | 26,893,546 | 58,908 mi | 33 yrs |
| Vauxhall Astra | 71.9% | 25,288,868 | 76,280 mi | 34 yrs |
| Vauxhall Zafira | 71.9% | 8,488,627 | 75,062 mi | 27 yrs |
| Ford Fiesta Flight | 70.7% | 430 | 67,037 mi | — yrs |
Compared to the Vauxhall Corsa (69.7% pass rate) and the Vauxhall Astra (71.9% pass rate), the Vauxhall Unknown outperforms both on MOT reliability.
Found a Vauxhall 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 Vauxhall UnknownShould you buy a used Vauxhall Unknown?
The Vauxhall Unknown has an overall MOT pass rate of 78.4% across 878 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common failure point is windscreen washer provides insufficient washer liquid with 7 recorded occurrences. Check for this on any test drive or pre-purchase inspection.
On the safety side, the most frequently flagged dangerous fault is parking brake efficiency less than 50% of the required value. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Vauxhall Unknown with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.
A typical Vauxhall Unknown owner drives around 4,305 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
In terms of longevity, most Vauxhall Unknown models stay on UK roads for around 18 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.