Bentley Unknown Reliability, MOT Pass Rate & Common Faults
Free Bentley Unknown car check
Is the Bentley Unknown reliable? We analysed 765 real MOT tests across 413 vehicles to find out.
Got a specific Bentley Unknown? Enter the reg for a free check:
The Bentley Unknown is above average for reliability based on real UK MOT data. Common problems include parking brake: efficiency below requirements, suspension component mounting prescribed area is excessively corroded and windscreen washer provides insufficient washer liquid. Here's everything you need to know before buying a used Bentley Unknown.
Bentley Unknown Number Plates
Number plates registered to a Bentley Unknown. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Bentley Unknown MOT Pass Rate by Year
How likely is a Bentley Unknown to pass its MOT? Here's the pass rate for each registration year, newest first.
Bentley Unknown Problems — What Goes Wrong?
The most common reasons a Bentley Unknown fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Bentley Unknown Common Faults & Problems
These are the most common serious faults found on Bentley Unknown models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Bentley Unknown Mileage — What's Normal?
How many miles does a typical Bentley Unknown owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Bentley Unknown MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Bentley Unknown year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2017 | 101 | 96.0% | 3,152 | 21,005 | 54,298 |
| 2016 | 52 | 92.3% | 8,316 | 18,612 | 29,780 |
| 2013 | 52 | 92.3% | 16,300 | 28,870 | 39,621 |
How Long Does a Bentley Unknown Last?
Based on 413 Bentley Unknown vehicles on UK roads.
Bentley Unknown Mileage Distribution
Total mileage recorded across all Bentley 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 Bentley Unknown
Based on MOT pass rates across all registration years with sufficient test data.
96.0% MOT pass rate from 101 tests
92.3% MOT pass rate from 52 tests
The best year to buy a used Bentley Unknown is 2017, which has the highest MOT pass rate at 96.0% across 101 tests. The 2013 model year has the lowest pass rate at 92.3% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Bentley Unknown Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Bentley Unknown THIS CAR | 90.3% | 765 | 26,954 mi | 13 yrs |
| Bentley Continental | 90% | 209,069 | 37,776 mi | 29 yrs |
| Bentley Arnage | 85.9% | 40,970 | 45,703 mi | 28 yrs |
| Bentley Turbo | 78.7% | 31,416 | 73,541 mi | 41 yrs |
| Mitsubishi L200 Barbarian Lb Dcb Di-d 4X4 | 83.4% | 858 | 94,206 mi | — yrs |
Compared to the Bentley Continental (90.0% pass rate) and the Bentley Arnage (85.9% pass rate), the Bentley Unknown outperforms both on MOT reliability.
Found a Bentley 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 Bentley UnknownShould you buy a used Bentley Unknown?
The Bentley Unknown has an overall MOT pass rate of 90.3% across 765 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 Bentley Unknown are parking brake: efficiency below requirements (6 recorded failures), suspension component mounting prescribed area is excessively corroded (6), and windscreen washer provides insufficient washer liquid (4). 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.
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 Bentley 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 Bentley Unknown owner drives around 703 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 Bentley Unknown models stay on UK roads for around 13 years. 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.