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MOT reliability

Ford Sierra

59,366 vehicles · 236,358 completed MOT tests analysed
69%
MOT pass rate

Based on 59,366 Ford Sierra vehicles and 236,358 completed MOT tests, the Ford Sierra has an overall 69% pass rate, with an average recorded mileage of 59,386 miles.

59,366
Vehicles
236,358
MOT tests
4,286
Avg miles / year
2.1
Faults per test
0%
Dangerous-fault share

Ford Sierra problem areas

Where faults occur most across all Ford Sierra MOT tests:

  • Other104%
  • Tyres, wheels & suspension8%
  • Seatbelts & equipment4%
  • Emissions & nuisance4%
  • Brakes3%
  • Steering3%
  • Body & structure1%
  • Lamps & electrical1%

Ford Sierra pass rate by age

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

Age (years)TestsPass rate
1475%
2850%
3683%
45100%
5978%
6978%
7683%
81275%
91759%
102268%
112983%
121,33966%
1310,42667%
1423,22065%
1527,56464%
1627,12964%
1723,75665%
1818,71466%
1914,59568%
2011,62169%

Fuel types: Petrol (55,151), Diesel (4,187), LPG (21), Other (5), Gas Bi-Fuel (2)

Most common Ford Sierra MOT faults

These are the faults and advisories recorded most often across Ford Sierra MOT tests:

  1. Nearside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3) (7,888 times)
  2. Oil leak (7,774 times)
  3. Offside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3) (7,341 times)
  4. Nearside Rear Tyre worn close to the legal limit (4.1.E.1) (6,174 times)
  5. Offside Rear Tyre worn close to the legal limit (4.1.E.1) (6,046 times)
  6. Offside Front Brake hose slightly deteriorated (3.6.B.4d) (5,755 times)
  7. Nearside Front Brake hose slightly deteriorated (3.6.B.4d) (5,687 times)
  8. Nearside Front Tyre worn close to the legal limit (4.1.E.1) (5,570 times)
  9. Fuel pipe/s corroded (5,373 times)
  10. Parking brake: efficiency below requirements (3.7.B.7) (5,090 times)
  11. Offside Front Tyre worn close to the legal limit (4.1.E.1) (5,052 times)
  12. Exhaust emissions carbon monoxide content excessive (7.3.B.1a) (4,850 times)
  13. Nearside Rear Brake pipe slightly corroded (3.6.B.2c) (4,061 times)
  14. Offside Seat belt anchorage prescribed area is excessively corroded (5.2.6) (3,982 times)
  15. Nearside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1) (3,414 times)

Ford Sierra pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2020 1 1 100% 36,943
2018 2 5 80% 52,452
2017 2 11 82% 67,180
2009 1 18 83% 8,095
2007 1 4 100% 65,888
2006 1 11 91% 91,074
2004 1 9 56% 92,905
2003 2 10 80% 71,024
2002 3 5 80% 68,088
2001 2 3 67% 22,730
2000 1 3 100% 2,639
1999 2 7 86% 77,415
1998 10 53 74% 48,835
1997 7 20 65% 70,857
1996 9 79 80% 49,016
1995 11 59 68% 70,408
1994 15 45 71% 122,264
1993 4,077 18,262 69% 61,259
1992 12,915 55,275 68% 59,452
1991 10,143 42,735 66% 58,163
1990 8,311 37,757 68% 60,248
1989 6,257 29,765 69% 58,634
1988 3,293 15,858 70% 59,017
1987 2,132 14,163 79% 61,086
1986 1,162 8,062 80% 61,103
1985 474 2,581 72% 59,153
1984 961 5,626 75% 57,750
1983 958 5,442 74% 57,948
1982 62 383 74% 52,877
1981 1 6 100% 18,084
1979 1 9 89% 7,412
1971 22 72 68% 50,564
1967 1 4 50% 95,055
1901 1 1 100% —

Ford Sierra reliability FAQ

Across 59,366 Ford Sierra vehicles in our MOT data, 69% pass the MOT (a 31% failure rate), with about 2.1 faults or advisories recorded per test.

The most frequently recorded Ford Sierra MOT issues are: Nearside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3); Oil leak; Offside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3).

The typical Ford Sierra in our data has covered around 59,386 miles.

Compare the Ford Sierra

See how the Ford Sierra stacks up against other Ford models on MOT reliability:

Sierra vs Fiesta Sierra vs Focus Sierra vs Transit Sierra vs Mondeo

Check a specific Ford Sierra

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

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