1998 Mercedes Unclassified — MOT History by Age

How cars manufactured in 1998 perform at MOT as they age

28 years

Current Age

68.5%

Latest Pass Rate

1,706

Total Tests (All Years)

154,219 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 1998 Mercedes Unclassified as it ages.

11 yrs52.1%

→ ↑5.2%

12 yrs57.3%

→ ↓3.4%

13 yrs53.9%

→ ↑4.2%

14 yrs58.1%

→ ↑2.8%

15 yrs60.9%

→ ↓1.5%

16 yrs59.4%

→ ↑11.8%

17 yrs71.2%

→ ↓8.7%

18 yrs62.5%

→ ↓6.6%

19 yrs55.9%

→ ↑15.2%

20 yrs71.1%

→ ↓6.0%

21 yrs65.1%

→ ↑8.2%

22 yrs73.3%

→ ↓19.8%

23 yrs53.5%

→ ↓5.9%

24 yrs47.6%

→ ↑22.9%

25 yrs70.5%

→ ↓2.0%

26 yrs68.5%

📊 View as table

Age	Pass Rate	Tests
11 yrs	52.1%	357
12 yrs	57.3%	281
13 yrs	53.9%	219
14 yrs	58.1%	172
15 yrs	60.9%	87
16 yrs	59.4%	64
17 yrs	71.2%	66
18 yrs	62.5%	56
19 yrs	55.9%	68
20 yrs	71.1%	45
21 yrs	65.1%	43
22 yrs	73.3%	30
23 yrs	53.5%	43
24 yrs	47.6%	42
25 yrs	70.5%	44
26 yrs	68.5%	89

Pass Rate Trend

How the 1998 Mercedes Unclassified pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (26 yrs)	68.5%	89
2023 (25 yrs)	70.5%	44
2022 (24 yrs)	47.6%	42
2021 (23 yrs)	53.5%	43
2020 (22 yrs)	73.3%	30
2019 (21 yrs)	65.1%	43
2018 (20 yrs)	71.1%	45
2017 (19 yrs)	55.9%	68
2016 (18 yrs)	62.5%	56
2015 (17 yrs)	71.2%	66
2014 (16 yrs)	59.4%	64
2013 (15 yrs)	60.9%	87
2012 (14 yrs)	58.1%	172
2011 (13 yrs)	53.9%	219
2010 (12 yrs)	57.3%	281
2009 (11 yrs)	52.1%	357

Year-by-Year MOT Results

2009High Fail Rate

52.1%

Age (yrs) 11Tests 357Avg Mileage 143,752Top Failure Lamps, Reflectors and Electrical Equipment — 31.7%

2010High Fail Rate

57.3%

Age (yrs) 12Tests 281Avg Mileage 140,510Top Failure Lamps, Reflectors and Electrical Equipment — 28.8%

2011High Fail Rate

53.9%

Age (yrs) 13Tests 219Avg Mileage 155,652Top Failure Lamps, Reflectors and Electrical Equipment — 28.3%

2012High Fail Rate

58.1%

Age (yrs) 14Tests 172Avg Mileage 147,673Top Failure Lamps, Reflectors and Electrical Equipment — 27.9%

2013High Fail Rate

60.9%

Age (yrs) 15Tests 87Avg Mileage 147,810Top Failure Brakes — 71.3%

2014High Fail Rate

59.4%

Age (yrs) 16Tests 64Avg Mileage 125,938Top Failure Lamps, Reflectors and Electrical Equipment — 67.2%

2015

71.2%

Age (yrs) 17Tests 66Avg Mileage 142,153Top Failure Lamps, Reflectors and Electrical Equipment — 45.5%

2016High Fail Rate

62.5%

Age (yrs) 18Tests 56Avg Mileage 161,333Top Failure Lamps, Reflectors and Electrical Equipment — 48.2%

2017High Fail Rate

55.9%

Age (yrs) 19Tests 68Avg Mileage 174,378Top Failure Brakes — 66.2%

2018

71.1%

Age (yrs) 20Tests 45Avg Mileage 192,674Top Failure Brakes — 44.4%

2019

65.1%

Age (yrs) 21Tests 43Avg Mileage 207,683Top Failure Lamps, reflectors and electrical equipment — 34.9%

2020

73.3%

Age (yrs) 22Tests 30Avg Mileage 197,436Top Failure Brakes — 73.3%

2021High Fail Rate

53.5%

Age (yrs) 23Tests 43Avg Mileage 199,909Top Failure Brakes — 86.0%

2022High Fail Rate

47.6%

Age (yrs) 24Tests 42Avg Mileage 156,212Top Failure Brakes — 92.9%

2023

70.5%

Age (yrs) 25Tests 44Avg Mileage 157,166Top Failure Brakes — 38.6%

2024

68.5%

Age (yrs) 26Tests 89Avg Mileage 154,219Top Failure Lamps, reflectors and electrical equipment — 55.1%

MOT results for 1998 Mercedes Unclassified by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	11	52.1%	357	143,752	Lamps, Reflectors and Electrical Equipment — 31.7%
2010	12	57.3%	281	140,510	Lamps, Reflectors and Electrical Equipment — 28.8%
2011	13	53.9%	219	155,652	Lamps, Reflectors and Electrical Equipment — 28.3%
2012	14	58.1%	172	147,673	Lamps, Reflectors and Electrical Equipment — 27.9%
2013	15	60.9%	87	147,810	Brakes — 71.3%
2014	16	59.4%	64	125,938	Lamps, Reflectors and Electrical Equipment — 67.2%
2015	17	71.2%	66	142,153	Lamps, Reflectors and Electrical Equipment — 45.5%
2016	18	62.5%	56	161,333	Lamps, Reflectors and Electrical Equipment — 48.2%
2017	19	55.9%	68	174,378	Brakes — 66.2%
2018	20	71.1%	45	192,674	Brakes — 44.4%
2019	21	65.1%	43	207,683	Lamps, reflectors and electrical equipment — 34.9%
2020	22	73.3%	30	197,436	Brakes — 73.3%
2021	23	53.5%	43	199,909	Brakes — 86.0%
2022	24	47.6%	42	156,212	Brakes — 92.9%
2023	25	70.5%	44	157,166	Brakes — 38.6%
2024	26	68.5%	89	154,219	Lamps, reflectors and electrical equipment — 55.1%

Common MOT Failures

Top failure categories across all test years for 1998 Mercedes Unclassified, with age trends.

Lamps, reflectors and electrical equipment

54.6%

↑ Increases with age

Brakes

48.7%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

39.1%

↓ Decreases with age

Suspension

28.6%

↑ Increases with age

Body, chassis, structure

25.5%

↓ 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
Brakes	25.8% (11 yrs)	46.1% (26 yrs)	+20.3%	🔴 ↑
Suspension	22.1% (11 yrs)	36.0% (26 yrs)	+13.9%	🔴 ↑

Other Manufacture Years

Looking for the best year to buy? See the full comparison on the Mercedes Unclassified page →

About This Data

This page shows how Mercedes Unclassified cars manufactured in 1998 perform at MOT as they age. Data spans from 2009 to 2024, covering 1,706 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.