2003 Mercedes S 350 — MOT History by Age

How cars manufactured in 2003 perform at MOT as they age

23 years

Current Age

73.0%

Latest Pass Rate

4,158

Total Tests (All Years)

110,561 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 17

This car: 73.0%

Average: 53.5%

✅ 19.5% above average (9249 models compared)

How This Car Ages

Pass rate progression for the 2003 Mercedes S 350 as it ages.

6 yrs80.7%

→ ↓4.0%

7 yrs76.7%

→ ↓0.5%

8 yrs76.2%

→ ↓6.7%

9 yrs69.5%

→ ↑3.3%

10 yrs72.8%

→ ↓3.4%

11 yrs69.4%

→ ↑3.4%

12 yrs72.8%

→ ↓2.9%

13 yrs69.9%

→ ↓4.1%

14 yrs65.8%

→ ↑10.4%

15 yrs76.2%

→ ↓12.1%

16 yrs64.1%

→ ↑8.9%

17 yrs73.0%

📊 View as table

Age	Pass Rate	Tests
6 yrs	80.7%	487
7 yrs	76.7%	451
8 yrs	76.2%	462
9 yrs	69.5%	453
10 yrs	72.8%	419
11 yrs	69.4%	395
12 yrs	72.8%	379
13 yrs	69.9%	366
14 yrs	65.8%	260
15 yrs	76.2%	168
16 yrs	64.1%	170
17 yrs	73.0%	148

Pass Rate Trend

How the 2003 Mercedes S 350 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2020 (17 yrs)	73%	148
2019 (16 yrs)	64.1%	170
2018 (15 yrs)	76.2%	168
2017 (14 yrs)	65.8%	260
2016 (13 yrs)	69.9%	366
2015 (12 yrs)	72.8%	379
2014 (11 yrs)	69.4%	395
2013 (10 yrs)	72.8%	419
2012 (9 yrs)	69.5%	453
2011 (8 yrs)	76.2%	462
2010 (7 yrs)	76.7%	451
2009 (6 yrs)	80.7%	487

Year-by-Year MOT Results

2009

80.7%

Age (yrs) 6Tests 487Avg Mileage 66,621Top Failure Tyres — 10.1%

2010

76.7%

Age (yrs) 7Tests 451Avg Mileage 72,951Top Failure Tyres — 12.4%

2011

76.2%

Age (yrs) 8Tests 462Avg Mileage 80,497Top Failure Tyres — 12.8%

2012

69.5%

Age (yrs) 9Tests 453Avg Mileage 87,403Top Failure Lamps, Reflectors and Electrical Equipment — 15.7%

2013

72.8%

Age (yrs) 10Tests 419Avg Mileage 90,027Top Failure Brakes — 25.3%

2014

69.4%

Age (yrs) 11Tests 395Avg Mileage 94,439Top Failure Brakes — 31.1%

2015

72.8%

Age (yrs) 12Tests 379Avg Mileage 99,627Top Failure Brakes — 28.8%

2016

69.9%

Age (yrs) 13Tests 366Avg Mileage 102,789Top Failure Brakes — 33.9%

2017

65.8%

Age (yrs) 14Tests 260Avg Mileage 104,396Top Failure Brakes — 34.2%

2018

76.2%

Age (yrs) 15Tests 168Avg Mileage 106,691Top Failure Brakes — 28.0%

2019High Fail Rate

64.1%

Age (yrs) 16Tests 170Avg Mileage 110,019Top Failure Brakes — 45.9%

2020

73.0%

Age (yrs) 17Tests 148Avg Mileage 110,561Top Failure Brakes — 46.6%

MOT results for 2003 Mercedes S 350 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	6	80.7%	487	66,621	Tyres — 10.1%
2010	7	76.7%	451	72,951	Tyres — 12.4%
2011	8	76.2%	462	80,497	Tyres — 12.8%
2012	9	69.5%	453	87,403	Lamps, Reflectors and Electrical Equipment — 15.7%
2013	10	72.8%	419	90,027	Brakes — 25.3%
2014	11	69.4%	395	94,439	Brakes — 31.1%
2015	12	72.8%	379	99,627	Brakes — 28.8%
2016	13	69.9%	366	102,789	Brakes — 33.9%
2017	14	65.8%	260	104,396	Brakes — 34.2%
2018	15	76.2%	168	106,691	Brakes — 28.0%
2019	16	64.1%	170	110,019	Brakes — 45.9%
2020	17	73.0%	148	110,561	Brakes — 46.6%

Common MOT Failures

Top failure categories across all test years for 2003 Mercedes S 350, with age trends.

Brakes

25.4%

↑ Increases with age

Tyres

19.8%

↑ Increases with age

Lamps, reflectors and electrical equipment

18.7%

↑ Increases with age

Suspension

17.6%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

15.6%

↑ 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	5.3% (6 yrs)	46.6% (17 yrs)	+41.3%	🔴 ↑
Suspension	2.5% (6 yrs)	20.9% (17 yrs)	+18.4%	🔴 ↑
Tyres	10.1% (6 yrs)	20.9% (17 yrs)	+10.8%	🔴 ↑

Other Manufacture Years

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

← Back to Mercedes S 350 overview

Looking for the best year to buy? See the full comparison on the Mercedes S 350 page →

About This Data

This page shows how Mercedes S 350 cars manufactured in 2003 perform at MOT as they age. Data spans from 2009 to 2020, covering 4,158 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.