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MOT reliability

Porsche 928 s

2,363 vehicles · 20,904 completed MOT tests analysed
76%
MOT pass rate

Based on 2,363 Porsche 928 s vehicles and 20,904 completed MOT tests, the Porsche 928 s has an overall 76% pass rate, with an average recorded mileage of 118,963 miles.

2,363
Vehicles
20,904
MOT tests
1,442
Avg miles / year
1.8
Faults per test
1%
Dangerous-fault share

Porsche 928 s problem areas

Where faults occur most across all Porsche 928 s MOT tests:

  • Other92%
  • Tyres, wheels & suspension8%
  • Emissions & nuisance8%
  • Brakes7%
  • Lamps & electrical4%
  • Steering3%
  • Seatbelts & equipment3%
  • Body & structure2%

Porsche 928 s pass rate by age

How the Porsche 928 s's MOT pass rate changes as it ages (buckets with 20+ tests).

Age (years)TestsPass rate
11100%
22100%
31100%
4475%
52100%
6475%
7771%
84100%
9650%
10475%
11862%
12580%
132576%
147179%
1518980%
1636575%
1755375%
1875476%
1990576%
201,02777%

Fuel types: Petrol (2,359), Other (2), LPG (1), Diesel (1)

Most common Porsche 928 s MOT faults

These are the faults and advisories recorded most often across Porsche 928 s MOT tests:

  1. Oil leak (945 times)
  2. Oil leak, but not excessive (8.4.1 (a) (i)) (659 times)
  3. Nearside Rear Tyre worn close to the legal limit (4.1.E.1) (629 times)
  4. Offside Rear Tyre worn close to the legal limit (4.1.E.1) (560 times)
  5. Fuel pipe/s corroded (460 times)
  6. Nearside Front wheel bearing has slight play (2.5.A.3c) (406 times)
  7. Windscreen washer provides insufficient washer liquid (8.2.3) (377 times)
  8. Offside Front wheel bearing has slight play (2.5.A.3c) (376 times)
  9. Nearside Front Tyre worn close to the legal limit (4.1.E.1) (359 times)
  10. Offside Front Tyre worn close to the legal limit (4.1.E.1) (347 times)
  11. Offside Rear fog lamp not working (1.3.2b) (344 times)
  12. Parking brake: efficiency below requirements (3.7.B.7) (318 times)
  13. Nearside Headlamp aim too low (1.8) (295 times)
  14. Offside Headlamp aim too low (1.8) (276 times)
  15. Offside Front Wheel bearing has slight play (5.1.3 (a) (i)) (232 times)

Porsche 928 s pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2008 1 17 94% 57,124
2004 1 7 71% 342,382
2003 1 2 50% 3,732
2002 1 1 100% 88,594
1999 3 26 81% 64,104
1998 1 7 57% 121,658
1997 1 12 83% 69,856
1995 3 17 53% 20,009
1994 3 20 80% 39,584
1993 13 175 71% 92,840
1992 39 573 80% 115,742
1991 132 1,712 77% 119,938
1990 148 1,681 76% 119,984
1989 209 2,786 76% 120,567
1988 273 3,301 78% 120,042
1987 197 2,200 75% 138,655
1986 232 2,446 74% 122,108
1985 158 1,514 74% 111,473
1984 182 1,762 74% 122,382
1983 140 1,141 72% 109,544
1982 96 773 71% 106,850
1981 61 406 73% 123,394
1980 48 305 77% 89,659
1979 5 9 100% 82,896
1971 1 2 100% 17,099

Porsche 928 s reliability FAQ

Across 2,363 Porsche 928 s vehicles in our MOT data, 76% pass the MOT (a 24% failure rate), with about 1.8 faults or advisories recorded per test.

The most frequently recorded Porsche 928 s MOT issues are: Oil leak; Oil leak, but not excessive (8.4.1 (a) (i)); Nearside Rear Tyre worn close to the legal limit (4.1.E.1).

The typical Porsche 928 s in our data has covered around 118,963 miles.

Compare the Porsche 928 s

See how the Porsche 928 s stacks up against other Porsche models on MOT reliability:

928 s vs 911 928 s vs Boxster 928 s vs Cayenne 928 s vs Macan

Check a specific Porsche 928 s

Enter a registration to see that exact vehicle's full MOT history, advisories and recurring faults.

See all Porsche models · Learn about common MOT failures · what an MOT checks