2004 Mercedes Sl 350 — MOT History by Age

How cars manufactured in 2004 perform at MOT as they age

22 years

Current Age

78.5%

Latest Pass Rate

10,679

Total Tests (All Years)

76,897 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 16

This car: 78.5%

Average: 52.7%

✅ 25.8% above average (10212 models compared)

How This Car Ages

Pass rate progression for the 2004 Mercedes Sl 350 as it ages.

5 yrs86.1%

→ ↓0.8%

6 yrs85.3%

→ ↑0.3%

7 yrs85.6%

→ ↓4.7%

8 yrs80.9%

→ ↓1.1%

9 yrs79.8%

→ ↑0.8%

10 yrs80.6%

→ ↓1.3%

11 yrs79.3%

→ ↑1.1%

12 yrs80.4%

→ ↓3.2%

13 yrs77.2%

→ ↓1.2%

14 yrs76.0%

→ ↑5.7%

15 yrs81.7%

→ ↓3.2%

16 yrs78.5%

📊 View as table

Age	Pass Rate	Tests
5 yrs	86.1%	1,184
6 yrs	85.3%	1,167
7 yrs	85.6%	1,192
8 yrs	80.9%	1,186
9 yrs	79.8%	1,171
10 yrs	80.6%	1,193
11 yrs	79.3%	1,166
12 yrs	80.4%	1,149
13 yrs	77.2%	408
14 yrs	76.0%	283
15 yrs	81.7%	301
16 yrs	78.5%	279

Pass Rate Trend

How the 2004 Mercedes Sl 350 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2020 (16 yrs)	78.5%	279
2019 (15 yrs)	81.7%	301
2018 (14 yrs)	76%	283
2017 (13 yrs)	77.2%	408
2016 (12 yrs)	80.4%	1,149
2015 (11 yrs)	79.3%	1,166
2014 (10 yrs)	80.6%	1,193
2013 (9 yrs)	79.8%	1,171
2012 (8 yrs)	80.9%	1,186
2011 (7 yrs)	85.6%	1,192
2010 (6 yrs)	85.3%	1,167
2009 (5 yrs)	86.1%	1,184

Year-by-Year MOT Results

2009

86.1%

Age (yrs) 5Tests 1,184Avg Mileage 35,504Top Failure Tyres — 7.3%

2010

85.3%

Age (yrs) 6Tests 1,167Avg Mileage 40,959Top Failure Tyres — 5.7%

2011

85.6%

Age (yrs) 7Tests 1,192Avg Mileage 46,193Top Failure Tyres — 6.6%

2012

80.9%

Age (yrs) 8Tests 1,186Avg Mileage 50,764Top Failure Tyres — 8.9%

2013

79.8%

Age (yrs) 9Tests 1,171Avg Mileage 54,264Top Failure Tyres — 17.3%

2014

80.6%

Age (yrs) 10Tests 1,193Avg Mileage 58,552Top Failure Tyres — 14.1%

2015

79.3%

Age (yrs) 11Tests 1,166Avg Mileage 62,996Top Failure Suspension — 13.9%

2016

80.4%

Age (yrs) 12Tests 1,149Avg Mileage 66,644Top Failure Brakes — 16.8%

2017

77.2%

Age (yrs) 13Tests 408Avg Mileage 68,490Top Failure Brakes — 29.2%

2018

76.0%

Age (yrs) 14Tests 283Avg Mileage 70,966Top Failure Suspension — 24.4%

2019

81.7%

Age (yrs) 15Tests 301Avg Mileage 73,256Top Failure Brakes — 19.3%

2020

78.5%

Age (yrs) 16Tests 279Avg Mileage 76,897Top Failure Brakes — 27.2%

MOT results for 2004 Mercedes Sl 350 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	5	86.1%	1,184	35,504	Tyres — 7.3%
2010	6	85.3%	1,167	40,959	Tyres — 5.7%
2011	7	85.6%	1,192	46,193	Tyres — 6.6%
2012	8	80.9%	1,186	50,764	Tyres — 8.9%
2013	9	79.8%	1,171	54,264	Tyres — 17.3%
2014	10	80.6%	1,193	58,552	Tyres — 14.1%
2015	11	79.3%	1,166	62,996	Suspension — 13.9%
2016	12	80.4%	1,149	66,644	Brakes — 16.8%
2017	13	77.2%	408	68,490	Brakes — 29.2%
2018	14	76.0%	283	70,966	Suspension — 24.4%
2019	15	81.7%	301	73,256	Brakes — 19.3%
2020	16	78.5%	279	76,897	Brakes — 27.2%

Common MOT Failures

Top failure categories across all test years for 2004 Mercedes Sl 350, with age trends.

Brakes

13.6%

↑ Increases with age

Tyres

12.7%

↑ Increases with age

Suspension

12.0%

↑ Increases with age

Lamps, reflectors and electrical equipment

8.2%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

6.6%

↑ 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	3.0% (5 yrs)	27.2% (16 yrs)	+24.2%	🔴 ↑
Suspension	2.1% (5 yrs)	19.4% (16 yrs)	+17.3%	🔴 ↑
Tyres	7.3% (5 yrs)	15.8% (16 yrs)	+8.5%	🔴 ↑

Other Manufacture Years

1979 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

← Back to Mercedes Sl 350 overview

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

About This Data

This page shows how Mercedes Sl 350 cars manufactured in 2004 perform at MOT as they age. Data spans from 2009 to 2020, covering 10,679 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.