2003 Mercedes Sl 350 Auto — MOT History by Age

How cars manufactured in 2003 perform at MOT as they age

23 years

Current Age

87.0%

Latest Pass Rate

1,050

Total Tests (All Years)

70,061 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Best vintage for Sl 350 Auto

Compared to Average at Age 13

This car: 87.0%

Average: 53.1%

✅ 33.9% above average (13033 models compared)

How This Car Ages

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

6 yrs80.6%

→ ↑4.2%

7 yrs84.8%

→ ↓0.6%

8 yrs84.2%

→ ↓0.5%

9 yrs83.7%

→ ↓10.3%

10 yrs73.4%

→ ↑10.1%

11 yrs83.5%

→ ↓6.4%

12 yrs77.1%

→ ↑9.9%

13 yrs87.0%

📊 View as table

Age	Pass Rate	Tests
6 yrs	80.6%	139
7 yrs	84.8%	125
8 yrs	84.2%	133
9 yrs	83.7%	129
10 yrs	73.4%	128
11 yrs	83.5%	133
12 yrs	77.1%	140
13 yrs	87.0%	123

Pass Rate Trend

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

📊 View as table

Built	Pass Rate	Tests
2016 (13 yrs)	87%	123
2015 (12 yrs)	77.1%	140
2014 (11 yrs)	83.5%	133
2013 (10 yrs)	73.4%	128
2012 (9 yrs)	83.7%	129
2011 (8 yrs)	84.2%	133
2010 (7 yrs)	84.8%	125
2009 (6 yrs)	80.6%	139

Year-by-Year MOT Results

2009

80.6%

Age (yrs) 6Tests 139Avg Mileage 40,750Top Failure Suspension — 12.9%

2010

84.8%

Age (yrs) 7Tests 125Avg Mileage 46,506Top Failure Suspension — 6.4%

2011

84.2%

Age (yrs) 8Tests 133Avg Mileage 53,042Top Failure Suspension — 10.5%

2012

83.7%

Age (yrs) 9Tests 129Avg Mileage 56,284Top Failure Tyres — 8.5%

2013

73.4%

Age (yrs) 10Tests 128Avg Mileage 58,947Top Failure Suspension — 21.9%

2014

83.5%

Age (yrs) 11Tests 133Avg Mileage 63,207Top Failure Suspension — 26.3%

2015

77.1%

Age (yrs) 12Tests 140Avg Mileage 68,600Top Failure Suspension — 35.0%

2016

87.0%

Age (yrs) 13Tests 123Avg Mileage 70,061Top Failure Suspension — 13.8%

MOT results for 2003 Mercedes Sl 350 Auto by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	6	80.6%	139	40,750	Suspension — 12.9%
2010	7	84.8%	125	46,506	Suspension — 6.4%
2011	8	84.2%	133	53,042	Suspension — 10.5%
2012	9	83.7%	129	56,284	Tyres — 8.5%
2013	10	73.4%	128	58,947	Suspension — 21.9%
2014	11	83.5%	133	63,207	Suspension — 26.3%
2015	12	77.1%	140	68,600	Suspension — 35.0%
2016	13	87.0%	123	70,061	Suspension — 13.8%

Common MOT Failures

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

Suspension

16.7%

— Consistent

Tyres

10.6%

↑ Increases with age

Brakes

7.3%

— Consistent

Road Wheels

5.0%

— Consistent

Lamps, Reflectors and Electrical Equipment

4.8%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Tyres	7.2% (6 yrs)	13.0% (13 yrs)	+5.8%	🔴 ↑
Brakes	7.9% (6 yrs)	4.9% (13 yrs)	-3.0%	🟢 ↓
Lamps, Reflectors and Electrical Equipment	4.3% (6 yrs)	5.7% (13 yrs)	+1.4%	⚪ —
Suspension	12.9% (6 yrs)	13.8% (13 yrs)	+0.9%	⚪ —
Driver's View of the Road	4.3% (6 yrs)	4.1% (13 yrs)	-0.2%	⚪ —

Other Manufacture Years

2003 2004 2005

← Back to Mercedes Sl 350 Auto overview

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About This Data

This page shows how Mercedes Sl 350 Auto cars manufactured in 2003 perform at MOT as they age. Data spans from 2009 to 2016, covering 1,050 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.