2009 Mercedes S 320 — MOT History by Age

How cars manufactured in 2009 perform at MOT as they age

17 years

Current Age

71.6%

Latest Pass Rate

7,098

Total Tests (All Years)

98,041 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 11

This car: 71.6%

Average: 56.2%

✅ 15.4% above average (14777 models compared)

How This Car Ages

Pass rate progression for the 2009 Mercedes S 320 as it ages.

1 yrs85.1%

→ ↑2.3%

2 yrs87.4%

→ ↓3.7%

3 yrs83.7%

→ ↓2.6%

4 yrs81.1%

→ ↓0.3%

5 yrs80.8%

→ ↓1.4%

6 yrs79.4%

→ ↓0.2%

7 yrs79.2%

→ ↓10.1%

8 yrs69.1%

→ ↑5.8%

9 yrs74.9%

→ ↓5.1%

10 yrs69.8%

→ ↑1.8%

11 yrs71.6%

📊 View as table

Age	Pass Rate	Tests
1 yrs	85.1%	141
2 yrs	87.4%	254
3 yrs	83.7%	1,242
4 yrs	81.1%	1,207
5 yrs	80.8%	1,152
6 yrs	79.4%	1,118
7 yrs	79.2%	1,064
8 yrs	69.1%	304
9 yrs	74.9%	203
10 yrs	69.8%	205
11 yrs	71.6%	208

Pass Rate Trend

How the 2009 Mercedes S 320 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2020 (11 yrs)	71.6%	208
2019 (10 yrs)	69.8%	205
2018 (9 yrs)	74.9%	203
2017 (8 yrs)	69.1%	304
2016 (7 yrs)	79.2%	1,064
2015 (6 yrs)	79.4%	1,118
2014 (5 yrs)	80.8%	1,152
2013 (4 yrs)	81.1%	1,207
2012 (3 yrs)	83.7%	1,242
2011 (2 yrs)	87.4%	254
2010 (1 yrs)	85.1%	141

Year-by-Year MOT Results

2010

85.1%

Age (yrs) 1Tests 141Avg Mileage 26,459Top Failure Tyres — 8.5%

2011

87.4%

Age (yrs) 2Tests 254Avg Mileage 45,633Top Failure Tyres — 5.5%

2012

83.7%

Age (yrs) 3Tests 1,242Avg Mileage 43,660Top Failure Tyres — 9.1%

2013

81.1%

Age (yrs) 4Tests 1,207Avg Mileage 57,639Top Failure Tyres — 20.7%

2014

80.8%

Age (yrs) 5Tests 1,152Avg Mileage 68,081Top Failure Tyres — 16.9%

2015

79.4%

Age (yrs) 6Tests 1,118Avg Mileage 76,994Top Failure Tyres — 16.5%

2016

79.2%

Age (yrs) 7Tests 1,064Avg Mileage 84,059Top Failure Brakes — 19.6%

2017

69.1%

Age (yrs) 8Tests 304Avg Mileage 84,421Top Failure Brakes — 34.2%

2018

74.9%

Age (yrs) 9Tests 203Avg Mileage 89,041Top Failure Tyres — 27.1%

2019

69.8%

Age (yrs) 10Tests 205Avg Mileage 95,610Top Failure Brakes — 27.8%

2020

71.6%

Age (yrs) 11Tests 208Avg Mileage 98,041Top Failure Brakes — 44.7%

MOT results for 2009 Mercedes S 320 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2010	1	85.1%	141	26,459	Tyres — 8.5%
2011	2	87.4%	254	45,633	Tyres — 5.5%
2012	3	83.7%	1,242	43,660	Tyres — 9.1%
2013	4	81.1%	1,207	57,639	Tyres — 20.7%
2014	5	80.8%	1,152	68,081	Tyres — 16.9%
2015	6	79.4%	1,118	76,994	Tyres — 16.5%
2016	7	79.2%	1,064	84,059	Brakes — 19.6%
2017	8	69.1%	304	84,421	Brakes — 34.2%
2018	9	74.9%	203	89,041	Tyres — 27.1%
2019	10	69.8%	205	95,610	Brakes — 27.8%
2020	11	71.6%	208	98,041	Brakes — 44.7%

Common MOT Failures

Top failure categories across all test years for 2009 Mercedes S 320, with age trends.

Brakes

19.0%

↑ Increases with age

Tyres

17.2%

↑ Increases with age

Suspension

15.4%

↑ Increases with age

Noise, emissions and leaks

11.7%

— Consistent

Lamps, reflectors and electrical equipment

10.8%

↑ 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	6.4% (1 yrs)	44.7% (11 yrs)	+38.3%	🔴 ↑
Tyres	8.5% (1 yrs)	24.5% (11 yrs)	+16.0%	🔴 ↑

Other Manufacture Years

Looking for the best year to buy? See the full comparison on the Mercedes S 320 page →

About This Data

This page shows how Mercedes S 320 cars manufactured in 2009 perform at MOT as they age. Data spans from 2010 to 2020, covering 7,098 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.