MOT reliability
Bentley Unknown
9,548 vehicles · 771 completed MOT tests analysed
90%
MOT pass rate
Based on 9,548 Bentley Unknown vehicles and 771 completed MOT tests, the Bentley Unknown has an overall 90% pass rate, with an average recorded mileage of 34,409 miles.
9,548
Vehicles
771
MOT tests
1,834
Avg miles / year
0.9
Faults per test
7%
Dangerous-fault share
Bentley Unknown problem areas
Where faults occur most across all Bentley Unknown MOT tests:
-
Other46%
-
Tyres, wheels & suspension18%
-
Brakes15%
-
Body & structure7%
-
Steering6%
-
Emissions & nuisance6%
-
Lamps & electrical5%
-
Visibility4%
Bentley Unknown pass rate by age
How the Bentley Unknown's MOT pass rate changes as it ages (buckets with 20+ tests).
| Age (years) | Tests | Pass rate |
|---|---|---|
| 1 | 8 | 100% |
| 2 | 9 | 78% |
| 3 | 152 | 96% |
| 4 | 64 | 94% |
| 5 | 35 | 91% |
| 6 | 22 | 95% |
| 7 | 14 | 100% |
| 8 | 10 | 100% |
| 9 | 13 | 92% |
| 10 | 7 | 86% |
| 11 | 8 | 75% |
| 12 | 4 | 75% |
| 13 | 9 | 89% |
| 14 | 8 | 88% |
| 15 | 8 | 100% |
| 16 | 8 | 75% |
| 17 | 11 | 91% |
| 18 | 8 | 100% |
| 19 | 8 | 88% |
| 20 | 6 | 83% |
Fuel types: Petrol (8,191), Hybrid Electric (Clean) (1,079), Electric (161), Diesel (87), Other (28), Gas (1), LPG (1)
Most common Bentley Unknown MOT faults
These are the faults and advisories recorded most often across Bentley Unknown MOT tests:
- COVID-19 6 MONTH EXTENSION (56 times)
- Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) (7 times)
- Parking brake: efficiency below requirements (3.7.B.7) (6 times)
- Windscreen washer provides insufficient washer liquid (8.2.3) (6 times)
- Oil leak (5 times)
- Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (4 times)
- Parking brake efficiency below requirements (1.4.2 (a) (i)) (4 times)
- Oil leak, but not excessive (8.4.1 (a) (i)) (4 times)
- Coolant leak (4 times)
- Offside Rear wheel bearing has slight play (2.6.2) (4 times)
- Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii)) (4 times)
- Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i)) (4 times)
- Service brake efficiency below requirements (1.2.2 (a) (i)) (3 times)
- Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii)) (3 times)
- Offside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3) (3 times)
Bentley Unknown pass rate by registration year
| Year | Vehicles | Tests | Pass rate | Avg mileage |
|---|---|---|---|---|
| 2023 | 2 | 2 | 100% | 20,094 |
| 2022 | 10 | 10 | 100% | 21,129 |
| 2021 | 5 | 11 | 100% | 18,678 |
| 2020 | 6 | 15 | 100% | 18,123 |
| 2019 | 12 | 27 | 89% | 8,182 |
| 2018 | 10 | 23 | 100% | 14,820 |
| 2017 | 71 | 96 | 97% | 25,529 |
| 2016 | 15 | 52 | 92% | 33,336 |
| 2015 | 9 | 13 | 92% | 27,686 |
| 2014 | 15 | 26 | 92% | 25,510 |
| 2013 | 26 | 53 | 92% | 36,267 |
| 2012 | 2 | 3 | 67% | 24,804 |
| 2011 | 3 | 12 | 100% | 31,565 |
| 2010 | 1 | 3 | 100% | 18,061 |
| 2008 | 2 | 14 | 79% | 64,676 |
| 2007 | 5 | 13 | 85% | 76,896 |
| 2005 | 2 | 15 | 87% | 54,361 |
| 2004 | 4 | 18 | 89% | 67,529 |
| 2001 | 2 | 2 | 100% | 38,418 |
| 2000 | 1 | 1 | 100% | 83,032 |
| 1999 | 1 | 7 | 100% | 84,081 |
| 1998 | 1 | 1 | 0% | — |
| 1997 | 2 | 13 | 69% | 28,043 |
| 1993 | 2 | 4 | 75% | 28,231 |
| 1992 | 1 | 1 | 100% | 36,055 |
| 1991 | 1 | 1 | 100% | 61,010 |
| 1990 | 5 | 15 | 80% | 46,361 |
| 1989 | 7 | 21 | 76% | 68,978 |
| 1988 | 2 | 3 | 100% | 31,913 |
| 1987 | 3 | 7 | 86% | 90,441 |
| 1986 | 2 | 2 | 100% | 47,560 |
| 1985 | 1 | 2 | 50% | 98,805 |
| 1984 | 1 | 1 | 100% | 21 |
| 1983 | 3 | 10 | 80% | 54,183 |
| 1981 | 2 | 2 | 100% | 104,877 |
| 1980 | 1 | 1 | 100% | 14,748 |
| 1979 | 1 | 2 | 50% | 146,459 |
| 1978 | 1 | 3 | 67% | 133,949 |
| 1977 | 2 | 6 | 67% | 134,663 |
| 1975 | 1 | 3 | 100% | 97,098 |
| 1974 | 2 | 2 | 100% | 78,837 |
| 1972 | 2 | 3 | 100% | 35,394 |
| 1970 | 3 | 3 | 100% | 45,606 |
| 1969 | 1 | 7 | 100% | 135,111 |
| 1968 | 3 | 5 | 60% | 58,513 |
| 1967 | 4 | 25 | 68% | 56,641 |
| 1966 | 1 | 2 | 50% | 31,655 |
| 1965 | 2 | 4 | 100% | 27,709 |
| 1964 | 2 | 13 | 85% | 50,202 |
| 1963 | 4 | 5 | 100% | 50,592 |
| 1962 | 2 | 2 | 100% | 51,656 |
| 1961 | 7 | 16 | 87% | 29,566 |
| 1960 | 3 | 8 | 88% | 62,483 |
| 1959 | 3 | 7 | 86% | 23,083 |
| 1958 | 2 | 2 | 100% | 40,568 |
| 1957 | 1 | 2 | 50% | 27,225 |
| 1956 | 8 | 9 | 89% | 34,008 |
| 1955 | 2 | 2 | 100% | 1,263 |
| 1954 | 3 | 6 | 83% | 28,573 |
| 1953 | 9 | 19 | 89% | 26,597 |
| 1952 | 6 | 6 | 100% | 12,884 |
| 1951 | 8 | 11 | 100% | 29,787 |
| 1950 | 17 | 25 | 96% | 23,725 |
| 1949 | 6 | 6 | 100% | 9,322 |
| 1948 | 8 | 9 | 89% | 9,411 |
| 1947 | 5 | 6 | 100% | 13,289 |
| 1940 | 2 | 2 | 100% | 15,710 |
| 1939 | 2 | 3 | 100% | 34,776 |
| 1938 | 1 | 1 | 100% | 47 |
| 1937 | 4 | 6 | 100% | 42,799 |
| 1936 | 6 | 6 | 100% | 39,081 |
| 1935 | 7 | 10 | 90% | 26,893 |
| 1934 | 4 | 7 | 86% | 19,826 |
| 1930 | 1 | 4 | 100% | 52,487 |
| 1929 | 3 | 3 | 100% | 5,838 |
| 1928 | 1 | 1 | 100% | 6,344 |
| 1927 | 3 | 6 | 100% | 31,081 |
| 1923 | 2 | 2 | 100% | 15,927 |
Bentley Unknown reliability FAQ
Across 9,548 Bentley Unknown vehicles in our MOT data,
90% pass the MOT (a 10% failure rate), with about
0.9 faults or advisories recorded per test.
The most frequently recorded Bentley Unknown MOT issues are:
COVID-19 6 MONTH EXTENSION; Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)); Parking brake: efficiency below requirements (3.7.B.7).
The typical Bentley Unknown in our data has covered around
34,409 miles.
Compare the Bentley Unknown
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Check a specific Bentley Unknown
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