MOT reliability
Porsche Unknown
4,599 vehicles · 982 completed MOT tests analysed
86%
MOT pass rate
Based on 4,599 Porsche Unknown vehicles and 982 completed MOT tests, the Porsche Unknown has an overall 86% pass rate, with an average recorded mileage of 54,409 miles.
4,599
Vehicles
982
MOT tests
2,567
Avg miles / year
1.1
Faults per test
3%
Dangerous-fault share
Porsche Unknown problem areas
Where faults occur most across all Porsche Unknown MOT tests:
-
Other39%
-
Tyres, wheels & suspension21%
-
Brakes15%
-
Lamps & electrical12%
-
Emissions & nuisance7%
-
Visibility3%
-
Steering2%
-
Body & structure2%
Porsche Unknown pass rate by age
How the Porsche Unknown's MOT pass rate changes as it ages (buckets with 20+ tests).
| Age (years) | Tests | Pass rate |
|---|---|---|
| 1 | 40 | 78% |
| 2 | 26 | 85% |
| 3 | 53 | 92% |
| 4 | 49 | 90% |
| 5 | 41 | 90% |
| 6 | 32 | 94% |
| 7 | 28 | 93% |
| 8 | 27 | 100% |
| 9 | 29 | 86% |
| 10 | 22 | 86% |
| 11 | 14 | 93% |
| 12 | 14 | 86% |
| 13 | 20 | 85% |
| 14 | 21 | 86% |
| 15 | 20 | 80% |
| 16 | 13 | 92% |
| 17 | 16 | 94% |
| 18 | 17 | 88% |
| 19 | 14 | 86% |
| 20 | 14 | 93% |
Fuel types: Petrol (4,405), Diesel (149), Electric (14), Other (10), LPG (9), Hybrid Electric (Clean) (8), Gas (3), Gas Bi-Fuel (1)
Most common Porsche Unknown MOT faults
These are the faults and advisories recorded most often across Porsche Unknown MOT tests:
- Oil leak, but not excessive (8.4.1 (a) (i)) (31 times)
- Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (14 times)
- Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (12 times)
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (11 times)
- COVID-19 6 MONTH EXTENSION (10 times)
- Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) (9 times)
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (9 times)
- Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i)) (8 times)
- Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) (7 times)
- Nearside Front Wheel bearing has slight play (5.1.3 (a) (i)) (7 times)
- Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (7 times)
- Windscreen washer not working (3.5 (a)) (7 times)
- Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) (6 times)
- Offside Headlamp aim too high (1.8) (6 times)
- Parking brake: efficiency below requirements (3.7.B.7) (6 times)
Porsche Unknown pass rate by registration year
| Year | Vehicles | Tests | Pass rate | Avg mileage |
|---|---|---|---|---|
| 2023 | 2 | 2 | 100% | 11,371 |
| 2022 | 2 | 2 | 100% | 13,644 |
| 2021 | 6 | 13 | 92% | 42,827 |
| 2020 | 8 | 15 | 87% | 35,648 |
| 2019 | 14 | 31 | 90% | 35,395 |
| 2018 | 16 | 34 | 94% | 32,000 |
| 2017 | 20 | 44 | 91% | 75,008 |
| 2016 | 32 | 125 | 86% | 47,122 |
| 2015 | 16 | 63 | 90% | 54,008 |
| 2014 | 9 | 30 | 87% | 69,796 |
| 2013 | 2 | 4 | 100% | 29,985 |
| 2012 | 1 | 2 | 100% | 95,016 |
| 2011 | 2 | 5 | 100% | 44,031 |
| 2010 | 4 | 18 | 100% | 39,768 |
| 2008 | 1 | 2 | 100% | 23,166 |
| 2007 | 3 | 17 | 94% | 81,161 |
| 2006 | 3 | 8 | 100% | 19,512 |
| 2005 | 7 | 48 | 90% | 70,303 |
| 2004 | 1 | 4 | 50% | 56,692 |
| 2003 | 5 | 43 | 76% | 115,816 |
| 2002 | 1 | 5 | 100% | 9,371 |
| 2001 | 1 | 6 | 83% | 70,055 |
| 2000 | 3 | 4 | 75% | 78,316 |
| 1999 | 3 | 33 | 85% | 61,328 |
| 1998 | 4 | 25 | 72% | 66,566 |
| 1997 | 3 | 10 | 90% | 41,403 |
| 1995 | 1 | 10 | 90% | 120,836 |
| 1993 | 6 | 23 | 91% | 61,165 |
| 1992 | 2 | 6 | 100% | 85,146 |
| 1991 | 2 | 4 | 75% | 87,517 |
| 1990 | 3 | 10 | 90% | 28,266 |
| 1989 | 3 | 5 | 100% | 74,964 |
| 1988 | 1 | 2 | 50% | 30,190 |
| 1986 | 1 | 2 | 100% | 29,979 |
| 1985 | 8 | 34 | 71% | 92,519 |
| 1984 | 8 | 26 | 85% | 113,100 |
| 1983 | 5 | 17 | 71% | 95,688 |
| 1982 | 9 | 17 | 82% | 65,268 |
| 1981 | 3 | 4 | 100% | 21,385 |
| 1979 | 5 | 14 | 93% | 99,535 |
| 1978 | 3 | 7 | 71% | 68,480 |
| 1977 | 6 | 12 | 83% | 76,886 |
| 1976 | 8 | 15 | 73% | 90,244 |
| 1975 | 2 | 3 | 67% | 45,017 |
| 1974 | 5 | 10 | 90% | 52,487 |
| 1973 | 16 | 27 | 89% | 47,297 |
| 1972 | 7 | 12 | 83% | 43,245 |
| 1971 | 1 | 3 | 100% | 100,506 |
| 1970 | 4 | 7 | 71% | 19,967 |
| 1969 | 6 | 20 | 85% | 51,524 |
| 1968 | 3 | 4 | 100% | 17,281 |
| 1967 | 9 | 15 | 86% | 34,411 |
| 1966 | 4 | 7 | 100% | 62,252 |
| 1965 | 5 | 8 | 88% | 26,632 |
| 1964 | 6 | 12 | 83% | 32,720 |
| 1963 | 7 | 8 | 88% | 60,931 |
| 1962 | 3 | 5 | 60% | 47,850 |
| 1961 | 4 | 4 | 100% | 3,552 |
| 1960 | 6 | 8 | 88% | 37,077 |
| 1959 | 1 | 1 | 100% | 67,784 |
| 1958 | 3 | 3 | 100% | 37,319 |
| 1957 | 5 | 6 | 100% | 54,035 |
| 1956 | 3 | 3 | 100% | 37,746 |
| 1955 | 4 | 6 | 80% | 23,914 |
| 1954 | 2 | 2 | 100% | 7,328 |
Porsche Unknown reliability FAQ
Across 4,599 Porsche Unknown vehicles in our MOT data,
86% pass the MOT (a 14% failure rate), with about
1.1 faults or advisories recorded per test.
The most frequently recorded Porsche Unknown MOT issues are:
Oil leak, but not excessive (8.4.1 (a) (i)); Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)); Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)).
The typical Porsche Unknown in our data has covered around
54,409 miles.
Compare the Porsche Unknown
See how the Porsche Unknown stacks up against other Porsche models on MOT reliability:
Check a specific Porsche Unknown
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