1985 Porsche 928 — MOT History by Age

How cars manufactured in 1985 perform at MOT as they age

41 years

Current Age

80.4%

Latest Pass Rate

892

Total Tests (All Years)

83,223 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Insufficient data for same-age comparison.

How This Car Ages

Pass rate progression for the 1985 Porsche 928 as it ages.

24 yrs61.9%

→ ↑2.3%

25 yrs64.2%

→ ↓0.8%

26 yrs63.4%

→ ↑8.7%

27 yrs72.1%

→ ↓6.0%

28 yrs66.1%

→ ↓9.2%

29 yrs56.9%

→ ↑10.4%

30 yrs67.3%

→ ↑6.0%

31 yrs73.3%

→ ↑1.7%

32 yrs75.0%

→ ↓0.0%

33 yrs75.0%

→ ↑11.5%

34 yrs86.5%

→ ↓20.7%

35 yrs65.8%

→ ↓1.5%

36 yrs64.3%

→ ↑7.1%

37 yrs71.4%

→ ↑1.9%

38 yrs73.3%

→ ↑7.1%

39 yrs80.4%

📊 View as table

Age	Pass Rate	Tests
24 yrs	61.9%	84
25 yrs	64.2%	81
26 yrs	63.4%	82
27 yrs	72.1%	68
28 yrs	66.1%	59
29 yrs	56.9%	65
30 yrs	67.3%	55
31 yrs	73.3%	60
32 yrs	75.0%	56
33 yrs	75.0%	32
34 yrs	86.5%	37
35 yrs	65.8%	38
36 yrs	64.3%	42
37 yrs	71.4%	42
38 yrs	73.3%	45
39 yrs	80.4%	46

Pass Rate Trend

How the 1985 Porsche 928 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (39 yrs)	80.4%	46
2023 (38 yrs)	73.3%	45
2022 (37 yrs)	71.4%	42
2021 (36 yrs)	64.3%	42
2020 (35 yrs)	65.8%	38
2019 (34 yrs)	86.5%	37
2018 (33 yrs)	75%	32
2017 (32 yrs)	75%	56
2016 (31 yrs)	73.3%	60
2015 (30 yrs)	67.3%	55
2014 (29 yrs)	56.9%	65
2013 (28 yrs)	66.1%	59
2012 (27 yrs)	72.1%	68
2011 (26 yrs)	63.4%	82
2010 (25 yrs)	64.2%	81
2009 (24 yrs)	61.9%	84

Year-by-Year MOT Results

2009High Fail Rate

61.9%

Age (yrs) 24Tests 84Avg Mileage 104,562Top Failure Lamps, Reflectors and Electrical Equipment — 29.8%

2010High Fail Rate

64.2%

Age (yrs) 25Tests 81Avg Mileage 110,787Top Failure Lamps, Reflectors and Electrical Equipment — 22.2%

2011High Fail Rate

63.4%

Age (yrs) 26Tests 82Avg Mileage 103,809Top Failure Lamps, Reflectors and Electrical Equipment — 26.8%

2012

72.1%

Age (yrs) 27Tests 68Avg Mileage 102,546Top Failure Lamps, Reflectors and Electrical Equipment — 17.6%

2013

66.1%

Age (yrs) 28Tests 59Avg Mileage 104,761Top Failure Lamps, Reflectors and Electrical Equipment — 54.2%

2014High Fail Rate

56.9%

Age (yrs) 29Tests 65Avg Mileage 102,748Top Failure Lamps, Reflectors and Electrical Equipment — 73.8%

2015

67.3%

Age (yrs) 30Tests 55Avg Mileage 101,349Top Failure Brakes — 50.9%

2016

73.3%

Age (yrs) 31Tests 60Avg Mileage 98,116Top Failure Brakes — 53.3%

2017

75.0%

Age (yrs) 32Tests 56Avg Mileage 101,174Top Failure Lamps, Reflectors and Electrical Equipment — 30.4%

2018

75.0%

Age (yrs) 33Tests 32Avg Mileage 104,109Top Failure Lamps, reflectors and electrical equipment — 46.9%

2019

86.5%

Age (yrs) 34Tests 37Avg Mileage 92,003Top Failure Brakes — 35.1%

2020

65.8%

Age (yrs) 35Tests 38Avg Mileage 85,878Top Failure Lamps, reflectors and electrical equipment — 60.5%

2021High Fail Rate

64.3%

Age (yrs) 36Tests 42Avg Mileage 99,090Top Failure Lamps, reflectors and electrical equipment — 78.6%

2022

71.4%

Age (yrs) 37Tests 42Avg Mileage 93,251Top Failure Lamps, reflectors and electrical equipment — 45.2%

2023

73.3%

Age (yrs) 38Tests 45Avg Mileage 90,468Top Failure Lamps, reflectors and electrical equipment — 66.7%

2024

80.4%

Age (yrs) 39Tests 46Avg Mileage 83,223Top Failure Tyres — 17.4%

MOT results for 1985 Porsche 928 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	24	61.9%	84	104,562	Lamps, Reflectors and Electrical Equipment — 29.8%
2010	25	64.2%	81	110,787	Lamps, Reflectors and Electrical Equipment — 22.2%
2011	26	63.4%	82	103,809	Lamps, Reflectors and Electrical Equipment — 26.8%
2012	27	72.1%	68	102,546	Lamps, Reflectors and Electrical Equipment — 17.6%
2013	28	66.1%	59	104,761	Lamps, Reflectors and Electrical Equipment — 54.2%
2014	29	56.9%	65	102,748	Lamps, Reflectors and Electrical Equipment — 73.8%
2015	30	67.3%	55	101,349	Brakes — 50.9%
2016	31	73.3%	60	98,116	Brakes — 53.3%
2017	32	75.0%	56	101,174	Lamps, Reflectors and Electrical Equipment — 30.4%
2018	33	75.0%	32	104,109	Lamps, reflectors and electrical equipment — 46.9%
2019	34	86.5%	37	92,003	Brakes — 35.1%
2020	35	65.8%	38	85,878	Lamps, reflectors and electrical equipment — 60.5%
2021	36	64.3%	42	99,090	Lamps, reflectors and electrical equipment — 78.6%
2022	37	71.4%	42	93,251	Lamps, reflectors and electrical equipment — 45.2%
2023	38	73.3%	45	90,468	Lamps, reflectors and electrical equipment — 66.7%
2024	39	80.4%	46	83,223	Tyres — 17.4%

Common MOT Failures

Top failure categories across all test years for 1985 Porsche 928, with age trends.

Lamps, reflectors and electrical equipment

47.7%

↓ Decreases with age

Lamps, Reflectors and Electrical Equipment

37.2%

— Consistent

Brakes

30.7%

↓ Decreases with age

Suspension

22.7%

↑ Increases with age

Noise, emissions and leaks

15.3%

↓ Decreases with age

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Suspension	13.1% (24 yrs)	17.4% (39 yrs)	+4.3%	🔴 ↑

Other Manufacture Years

1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995

← Back to Porsche 928 overview

Looking for the best year to buy? See the full comparison on the Porsche 928 page →

About This Data

This page shows how Porsche 928 cars manufactured in 1985 perform at MOT as they age. Data spans from 2009 to 2024, covering 892 tests. Pass rates naturally decline with age as components wear.

Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.