1999 Mercedes S 430 — MOT History by Age

How cars manufactured in 1999 perform at MOT as they age

27 years

Current Age

57.4%

Latest Pass Rate

2,895

Total Tests (All Years)

110,982 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 430 as it ages.

10 yrs66.9%

→ ↓5.0%

11 yrs61.9%

→ ↑1.9%

12 yrs63.8%

→ ↓5.5%

13 yrs58.3%

→ ↓2.3%

14 yrs56.0%

→ ↑1.2%

15 yrs57.2%

→ ↑7.6%

16 yrs64.8%

→ ↑3.8%

17 yrs68.6%

→ ↓3.8%

18 yrs64.8%

→ ↓1.3%

19 yrs63.5%

→ ↑4.8%

20 yrs68.3%

→ ↓10.9%

21 yrs57.4%

📊 View as table

Age	Pass Rate	Tests
10 yrs	66.9%	459
11 yrs	61.9%	441
12 yrs	63.8%	378
13 yrs	58.3%	336
14 yrs	56.0%	293
15 yrs	57.2%	269
16 yrs	64.8%	219
17 yrs	68.6%	191
18 yrs	64.8%	125
19 yrs	63.5%	74
20 yrs	68.3%	63
21 yrs	57.4%	47

Pass Rate Trend

How the 1999 Mercedes S 430 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2020 (21 yrs)	57.4%	47
2019 (20 yrs)	68.3%	63
2018 (19 yrs)	63.5%	74
2017 (18 yrs)	64.8%	125
2016 (17 yrs)	68.6%	191
2015 (16 yrs)	64.8%	219
2014 (15 yrs)	57.2%	269
2013 (14 yrs)	56%	293
2012 (13 yrs)	58.3%	336
2011 (12 yrs)	63.8%	378
2010 (11 yrs)	61.9%	441
2009 (10 yrs)	66.9%	459

Year-by-Year MOT Results

2009

66.9%

Age (yrs) 10Tests 459Avg Mileage 105,047Top Failure Lamps, Reflectors and Electrical Equipment — 17.6%

2010High Fail Rate

61.9%

Age (yrs) 11Tests 441Avg Mileage 109,503Top Failure Brakes — 22.4%

2011High Fail Rate

63.8%

Age (yrs) 12Tests 378Avg Mileage 111,827Top Failure Lamps, Reflectors and Electrical Equipment — 18.8%

2012High Fail Rate

58.3%

Age (yrs) 13Tests 336Avg Mileage 117,183Top Failure Suspension — 26.5%

2013High Fail Rate

56.0%

Age (yrs) 14Tests 293Avg Mileage 119,986Top Failure Brakes — 53.6%

2014High Fail Rate

57.2%

Age (yrs) 15Tests 269Avg Mileage 126,717Top Failure Brakes — 53.5%

2015High Fail Rate

64.8%

Age (yrs) 16Tests 219Avg Mileage 124,001Top Failure Brakes — 42.0%

2016

68.6%

Age (yrs) 17Tests 191Avg Mileage 132,481Top Failure Brakes — 40.3%

2017High Fail Rate

64.8%

Age (yrs) 18Tests 125Avg Mileage 120,710Top Failure Brakes — 46.4%

2018High Fail Rate

63.5%

Age (yrs) 19Tests 74Avg Mileage 114,713Top Failure Suspension — 59.5%

2019

68.3%

Age (yrs) 20Tests 63Avg Mileage 120,438Top Failure Tyres — 44.4%

2020High Fail Rate

57.4%

Age (yrs) 21Tests 47Avg Mileage 110,982Top Failure Brakes — 87.2%

MOT results for 1999 Mercedes S 430 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	10	66.9%	459	105,047	Lamps, Reflectors and Electrical Equipment — 17.6%
2010	11	61.9%	441	109,503	Brakes — 22.4%
2011	12	63.8%	378	111,827	Lamps, Reflectors and Electrical Equipment — 18.8%
2012	13	58.3%	336	117,183	Suspension — 26.5%
2013	14	56.0%	293	119,986	Brakes — 53.6%
2014	15	57.2%	269	126,717	Brakes — 53.5%
2015	16	64.8%	219	124,001	Brakes — 42.0%
2016	17	68.6%	191	132,481	Brakes — 40.3%
2017	18	64.8%	125	120,710	Brakes — 46.4%
2018	19	63.5%	74	114,713	Suspension — 59.5%
2019	20	68.3%	63	120,438	Tyres — 44.4%
2020	21	57.4%	47	110,982	Brakes — 87.2%

Common MOT Failures

Top failure categories across all test years for 1999 Mercedes S 430, with age trends.

Brakes

41.1%

↑ Increases with age

Suspension

36.4%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

29.4%

↑ Increases with age

Lamps, reflectors and electrical equipment

24.4%

↑ Increases with age

Visibility

21.3%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Brakes	17.4% (10 yrs)	87.2% (21 yrs)	+69.8%	🔴 ↑
Suspension	12.2% (10 yrs)	80.9% (21 yrs)	+68.7%	🔴 ↑
Tyres	13.5% (10 yrs)	27.7% (21 yrs)	+14.2%	🔴 ↑

Other Manufacture Years

1999 2000 2001 2002 2003

← Back to Mercedes S 430 overview

Looking for the best year to buy? See the full comparison on the Mercedes S 430 page →

About This Data

This page shows how Mercedes S 430 cars manufactured in 1999 perform at MOT as they age. Data spans from 2009 to 2020, covering 2,895 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.