2003 Mercedes Sl 55 — MOT History by Age

How cars manufactured in 2003 perform at MOT as they age

23 years

Current Age

82.3%

Latest Pass Rate

7,950

Total Tests (All Years)

67,092 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 17

This car: 82.3%

Average: 53.5%

✅ 28.8% above average (9249 models compared)

How This Car Ages

Pass rate progression for the 2003 Mercedes Sl 55 as it ages.

6 yrs81.2%

→ ↑3.0%

7 yrs84.2%

→ ↓2.0%

8 yrs82.2%

→ ↓4.7%

9 yrs77.5%

→ ↓2.6%

10 yrs74.9%

→ ↑5.9%

11 yrs80.8%

→ ↑0.6%

12 yrs81.4%

→ ↓1.4%

13 yrs80.0%

→ ↓1.2%

14 yrs78.8%

→ ↑2.3%

15 yrs81.1%

→ ↑1.1%

16 yrs82.2%

→ ↑0.1%

17 yrs82.3%

📊 View as table

Age	Pass Rate	Tests
6 yrs	81.2%	892
7 yrs	84.2%	840
8 yrs	82.2%	860
9 yrs	77.5%	849
10 yrs	74.9%	854
11 yrs	80.8%	826
12 yrs	81.4%	806
13 yrs	80.0%	791
14 yrs	78.8%	416
15 yrs	81.1%	281
16 yrs	82.2%	275
17 yrs	82.3%	260

Pass Rate Trend

How the 2003 Mercedes Sl 55 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2020 (17 yrs)	82.3%	260
2019 (16 yrs)	82.2%	275
2018 (15 yrs)	81.1%	281
2017 (14 yrs)	78.8%	416
2016 (13 yrs)	80%	791
2015 (12 yrs)	81.4%	806
2014 (11 yrs)	80.8%	826
2013 (10 yrs)	74.9%	854
2012 (9 yrs)	77.5%	849
2011 (8 yrs)	82.2%	860
2010 (7 yrs)	84.2%	840
2009 (6 yrs)	81.2%	892

Year-by-Year MOT Results

2009

81.2%

Age (yrs) 6Tests 892Avg Mileage 38,086Top Failure Tyres — 8.3%

2010

84.2%

Age (yrs) 7Tests 840Avg Mileage 42,715Top Failure Tyres — 6.5%

2011

82.2%

Age (yrs) 8Tests 860Avg Mileage 47,427Top Failure Suspension — 7.6%

2012

77.5%

Age (yrs) 9Tests 849Avg Mileage 51,014Top Failure Suspension — 11.5%

2013

74.9%

Age (yrs) 10Tests 854Avg Mileage 54,710Top Failure Suspension — 27.2%

2014

80.8%

Age (yrs) 11Tests 826Avg Mileage 56,980Top Failure Suspension — 20.3%

2015

81.4%

Age (yrs) 12Tests 806Avg Mileage 60,061Top Failure Suspension — 18.7%

2016

80.0%

Age (yrs) 13Tests 791Avg Mileage 63,014Top Failure Suspension — 15.2%

2017

78.8%

Age (yrs) 14Tests 416Avg Mileage 63,924Top Failure Suspension — 17.1%

2018

81.1%

Age (yrs) 15Tests 281Avg Mileage 66,408Top Failure Brakes — 13.5%

2019

82.2%

Age (yrs) 16Tests 275Avg Mileage 66,305Top Failure Suspension — 20.0%

2020

82.3%

Age (yrs) 17Tests 260Avg Mileage 67,092Top Failure Brakes — 23.1%

MOT results for 2003 Mercedes Sl 55 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	6	81.2%	892	38,086	Tyres — 8.3%
2010	7	84.2%	840	42,715	Tyres — 6.5%
2011	8	82.2%	860	47,427	Suspension — 7.6%
2012	9	77.5%	849	51,014	Suspension — 11.5%
2013	10	74.9%	854	54,710	Suspension — 27.2%
2014	11	80.8%	826	56,980	Suspension — 20.3%
2015	12	81.4%	806	60,061	Suspension — 18.7%
2016	13	80.0%	791	63,014	Suspension — 15.2%
2017	14	78.8%	416	63,924	Suspension — 17.1%
2018	15	81.1%	281	66,408	Brakes — 13.5%
2019	16	82.2%	275	66,305	Suspension — 20.0%
2020	17	82.3%	260	67,092	Brakes — 23.1%

Common MOT Failures

Top failure categories across all test years for 2003 Mercedes Sl 55, with age trends.

Suspension

14.8%

↑ Increases with age

Tyres

11.6%

↑ Increases with age

Brakes

11.6%

↑ Increases with age

Lamps, reflectors and electrical equipment

7.8%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

5.7%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Brakes	6.5% (6 yrs)	23.1% (17 yrs)	+16.6%	🔴 ↑
Suspension	6.2% (6 yrs)	15.4% (17 yrs)	+9.2%	🔴 ↑
Tyres	8.3% (6 yrs)	14.6% (17 yrs)	+6.3%	🔴 ↑

Other Manufacture Years

2002 2003 2004 2005 2006 2007

← Back to Mercedes Sl 55 overview

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About This Data

This page shows how Mercedes Sl 55 cars manufactured in 2003 perform at MOT as they age. Data spans from 2009 to 2020, covering 7,950 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.