1991 Mercedes 300 E — MOT History by Age

How cars manufactured in 1991 perform at MOT as they age

35 years

Current Age

75.0%

Latest Pass Rate

1,222

Total Tests (All Years)

133,348 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 1991 Mercedes 300 E as it ages.

18 yrs61.2%

→ ↓2.4%

19 yrs58.8%

→ ↑2.9%

20 yrs61.7%

→ ↑1.3%

21 yrs63.0%

→ ↓0.9%

22 yrs62.1%

→ ↑2.3%

23 yrs64.4%

→ ↓7.4%

24 yrs57.0%

→ ↑18.0%

25 yrs75.0%

📊 View as table

Age	Pass Rate	Tests
18 yrs	61.2%	273
19 yrs	58.8%	233
20 yrs	61.7%	188
21 yrs	63.0%	138
22 yrs	62.1%	116
23 yrs	64.4%	101
24 yrs	57.0%	93
25 yrs	75.0%	80

Pass Rate Trend

How the 1991 Mercedes 300 E pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2016 (25 yrs)	75%	80
2015 (24 yrs)	57%	93
2014 (23 yrs)	64.4%	101
2013 (22 yrs)	62.1%	116
2012 (21 yrs)	63%	138
2011 (20 yrs)	61.7%	188
2010 (19 yrs)	58.8%	233
2009 (18 yrs)	61.2%	273

Year-by-Year MOT Results

2009High Fail Rate

61.2%

Age (yrs) 18Tests 273Avg Mileage 135,941Top Failure Brakes — 18.3%

2010High Fail Rate

58.8%

Age (yrs) 19Tests 233Avg Mileage 136,609Top Failure Suspension — 18.5%

2011High Fail Rate

61.7%

Age (yrs) 20Tests 188Avg Mileage 132,556Top Failure Brakes — 18.6%

2012High Fail Rate

63.0%

Age (yrs) 21Tests 138Avg Mileage 127,921Top Failure Suspension — 18.1%

2013High Fail Rate

62.1%

Age (yrs) 22Tests 116Avg Mileage 124,824Top Failure Brakes — 56.9%

2014High Fail Rate

64.4%

Age (yrs) 23Tests 101Avg Mileage 128,757Top Failure Brakes — 39.6%

2015High Fail Rate

57.0%

Age (yrs) 24Tests 93Avg Mileage 129,616Top Failure Brakes — 55.9%

2016

75.0%

Age (yrs) 25Tests 80Avg Mileage 133,348Top Failure Brakes — 37.5%

MOT results for 1991 Mercedes 300 E by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	18	61.2%	273	135,941	Brakes — 18.3%
2010	19	58.8%	233	136,609	Suspension — 18.5%
2011	20	61.7%	188	132,556	Brakes — 18.6%
2012	21	63.0%	138	127,921	Suspension — 18.1%
2013	22	62.1%	116	124,824	Brakes — 56.9%
2014	23	64.4%	101	128,757	Brakes — 39.6%
2015	24	57.0%	93	129,616	Brakes — 55.9%
2016	25	75.0%	80	133,348	Brakes — 37.5%

Common MOT Failures

Top failure categories across all test years for 1991 Mercedes 300 E, with age trends.

Brakes

32.5%

↑ Increases with age

Suspension

26.9%

↓ Decreases with age

Lamps, Reflectors and Electrical Equipment

23.5%

— Consistent

Tyres

14.5%

— Consistent

Exhaust, Fuel and Emissions

11.9%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Brakes	18.3% (18 yrs)	37.5% (25 yrs)	+19.2%	🔴 ↑
Suspension	17.2% (18 yrs)	10.0% (25 yrs)	-7.2%	🟢 ↓
Lamps, Reflectors and Electrical Equipment	17.9% (18 yrs)	16.3% (25 yrs)	-1.6%	⚪ —
Exhaust, Fuel and Emissions	12.8% (18 yrs)	13.8% (25 yrs)	+1.0%	⚪ —
Tyres	13.2% (18 yrs)	12.5% (25 yrs)	-0.7%	⚪ —

Other Manufacture Years

1986 1987 1988 1989 1990 1991 1992

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About This Data

This page shows how Mercedes 300 E cars manufactured in 1991 perform at MOT as they age. Data spans from 2009 to 2016, covering 1,222 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.