1999 Mercedes S 500 — MOT History by Age

How cars manufactured in 1999 perform at MOT as they age

27 years

Current Age

60.3%

Latest Pass Rate

4,110

Total Tests (All Years)

122,609 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 1999 Mercedes S 500 as it ages.

10 yrs61.8%

→ ↑4.9%

11 yrs66.7%

→ ↓1.2%

12 yrs65.5%

→ ↓5.5%

13 yrs60.0%

→ ↑0.3%

14 yrs60.3%

→ ↓3.1%

15 yrs57.2%

→ ↑5.5%

16 yrs62.7%

→ ↓1.1%

17 yrs61.6%

→ ↓4.4%

18 yrs57.2%

→ ↑6.4%

19 yrs63.6%

→ ↓6.6%

20 yrs57.0%

→ ↑3.3%

21 yrs60.3%

📊 View as table

Age	Pass Rate	Tests
10 yrs	61.8%	636
11 yrs	66.7%	606
12 yrs	65.5%	553
13 yrs	60.0%	465
14 yrs	60.3%	406
15 yrs	57.2%	369
16 yrs	62.7%	343
17 yrs	61.6%	310
18 yrs	57.2%	173
19 yrs	63.6%	107
20 yrs	57.0%	79
21 yrs	60.3%	63

Pass Rate Trend

How the 1999 Mercedes S 500 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2020 (21 yrs)	60.3%	63
2019 (20 yrs)	57%	79
2018 (19 yrs)	63.6%	107
2017 (18 yrs)	57.2%	173
2016 (17 yrs)	61.6%	310
2015 (16 yrs)	62.7%	343
2014 (15 yrs)	57.2%	369
2013 (14 yrs)	60.3%	406
2012 (13 yrs)	60%	465
2011 (12 yrs)	65.5%	553
2010 (11 yrs)	66.7%	606
2009 (10 yrs)	61.8%	636

Year-by-Year MOT Results

2009High Fail Rate

61.8%

Age (yrs) 10Tests 636Avg Mileage 101,922Top Failure Brakes — 17.1%

2010

66.7%

Age (yrs) 11Tests 606Avg Mileage 107,252Top Failure Brakes — 16.5%

2011

65.5%

Age (yrs) 12Tests 553Avg Mileage 109,409Top Failure Brakes — 19.3%

2012High Fail Rate

60.0%

Age (yrs) 13Tests 465Avg Mileage 112,558Top Failure Suspension — 24.1%

2013High Fail Rate

60.3%

Age (yrs) 14Tests 406Avg Mileage 112,992Top Failure Suspension — 45.6%

2014High Fail Rate

57.2%

Age (yrs) 15Tests 369Avg Mileage 115,925Top Failure Brakes — 66.7%

2015High Fail Rate

62.7%

Age (yrs) 16Tests 343Avg Mileage 118,480Top Failure Suspension — 46.9%

2016High Fail Rate

61.6%

Age (yrs) 17Tests 310Avg Mileage 120,992Top Failure Suspension — 46.5%

2017High Fail Rate

57.2%

Age (yrs) 18Tests 173Avg Mileage 120,297Top Failure Suspension — 59.5%

2018High Fail Rate

63.6%

Age (yrs) 19Tests 107Avg Mileage 123,570Top Failure Brakes — 51.4%

2019High Fail Rate

57.0%

Age (yrs) 20Tests 79Avg Mileage 120,473Top Failure Brakes — 70.9%

2020High Fail Rate

60.3%

Age (yrs) 21Tests 63Avg Mileage 122,609Top Failure Brakes — 60.3%

MOT results for 1999 Mercedes S 500 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	10	61.8%	636	101,922	Brakes — 17.1%
2010	11	66.7%	606	107,252	Brakes — 16.5%
2011	12	65.5%	553	109,409	Brakes — 19.3%
2012	13	60.0%	465	112,558	Suspension — 24.1%
2013	14	60.3%	406	112,992	Suspension — 45.6%
2014	15	57.2%	369	115,925	Brakes — 66.7%
2015	16	62.7%	343	118,480	Suspension — 46.9%
2016	17	61.6%	310	120,992	Suspension — 46.5%
2017	18	57.2%	173	120,297	Suspension — 59.5%
2018	19	63.6%	107	123,570	Brakes — 51.4%
2019	20	57.0%	79	120,473	Brakes — 70.9%
2020	21	60.3%	63	122,609	Brakes — 60.3%

Common MOT Failures

Top failure categories across all test years for 1999 Mercedes S 500, with age trends.

Brakes

41.7%

↑ Increases with age

Lamps, reflectors and electrical equipment

38.7%

↑ Increases with age

Suspension

37.9%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

27.6%

↓ Decreases with age

Tyres

23.3%

↑ Increases 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	17.1% (10 yrs)	60.3% (21 yrs)	+43.2%	🔴 ↑
Tyres	16.7% (10 yrs)	41.3% (21 yrs)	+24.6%	🔴 ↑
Suspension	14.3% (10 yrs)	36.5% (21 yrs)	+22.2%	🔴 ↑

Other Manufacture Years

Looking for the best year to buy? See the full comparison on the Mercedes S 500 page →

About This Data

This page shows how Mercedes S 500 cars manufactured in 1999 perform at MOT as they age. Data spans from 2009 to 2020, covering 4,110 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.