2003 Mercedes C 320 — MOT History by Age

How cars manufactured in 2003 perform at MOT as they age

23 years

Current Age

63.1%

Latest Pass Rate

5,442

Total Tests (All Years)

104,919 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 17

This car: 63.1%

Average: 53.5%

✅ 9.6% above average (9249 models compared)

How This Car Ages

Pass rate progression for the 2003 Mercedes C 320 as it ages.

6 yrs70.5%

→ ↓7.7%

7 yrs62.8%

→ ↑5.5%

8 yrs68.3%

→ ↓2.8%

9 yrs65.5%

→ ↓7.8%

10 yrs57.7%

→ ↑1.0%

11 yrs58.7%

→ ↑0.6%

12 yrs59.3%

→ ↑0.7%

13 yrs60.0%

→ ↓3.5%

14 yrs56.5%

→ ↑2.6%

15 yrs59.1%

→ ↑0.5%

16 yrs59.6%

→ ↑3.5%

17 yrs63.1%

📊 View as table

Age	Pass Rate	Tests
6 yrs	70.5%	597
7 yrs	62.8%	592
8 yrs	68.3%	608
9 yrs	65.5%	583
10 yrs	57.7%	584
11 yrs	58.7%	555
12 yrs	59.3%	533
13 yrs	60.0%	515
14 yrs	56.5%	308
15 yrs	59.1%	203
16 yrs	59.6%	188
17 yrs	63.1%	176

Pass Rate Trend

How the 2003 Mercedes C 320 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2020 (17 yrs)	63.1%	176
2019 (16 yrs)	59.6%	188
2018 (15 yrs)	59.1%	203
2017 (14 yrs)	56.5%	308
2016 (13 yrs)	60%	515
2015 (12 yrs)	59.3%	533
2014 (11 yrs)	58.7%	555
2013 (10 yrs)	57.7%	584
2012 (9 yrs)	65.5%	583
2011 (8 yrs)	68.3%	608
2010 (7 yrs)	62.8%	592
2009 (6 yrs)	70.5%	597

Year-by-Year MOT Results

2009

70.5%

Age (yrs) 6Tests 597Avg Mileage 54,483Top Failure Lamps, Reflectors and Electrical Equipment — 11.1%

2010High Fail Rate

62.8%

Age (yrs) 7Tests 592Avg Mileage 61,026Top Failure Suspension — 15.9%

2011

68.3%

Age (yrs) 8Tests 608Avg Mileage 68,257Top Failure Suspension — 15.1%

2012

65.5%

Age (yrs) 9Tests 583Avg Mileage 74,700Top Failure Suspension — 19.7%

2013High Fail Rate

57.7%

Age (yrs) 10Tests 584Avg Mileage 80,345Top Failure Suspension — 47.9%

2014High Fail Rate

58.7%

Age (yrs) 11Tests 555Avg Mileage 85,637Top Failure Suspension — 48.6%

2015High Fail Rate

59.3%

Age (yrs) 12Tests 533Avg Mileage 91,798Top Failure Suspension — 51.8%

2016High Fail Rate

60.0%

Age (yrs) 13Tests 515Avg Mileage 96,076Top Failure Suspension — 49.5%

2017High Fail Rate

56.5%

Age (yrs) 14Tests 308Avg Mileage 100,753Top Failure Suspension — 65.3%

2018High Fail Rate

59.1%

Age (yrs) 15Tests 203Avg Mileage 102,500Top Failure Suspension — 57.6%

2019High Fail Rate

59.6%

Age (yrs) 16Tests 188Avg Mileage 102,389Top Failure Suspension — 60.1%

2020High Fail Rate

63.1%

Age (yrs) 17Tests 176Avg Mileage 104,919Top Failure Suspension — 51.7%

MOT results for 2003 Mercedes C 320 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	6	70.5%	597	54,483	Lamps, Reflectors and Electrical Equipment — 11.1%
2010	7	62.8%	592	61,026	Suspension — 15.9%
2011	8	68.3%	608	68,257	Suspension — 15.1%
2012	9	65.5%	583	74,700	Suspension — 19.7%
2013	10	57.7%	584	80,345	Suspension — 47.9%
2014	11	58.7%	555	85,637	Suspension — 48.6%
2015	12	59.3%	533	91,798	Suspension — 51.8%
2016	13	60.0%	515	96,076	Suspension — 49.5%
2017	14	56.5%	308	100,753	Suspension — 65.3%
2018	15	59.1%	203	102,500	Suspension — 57.6%
2019	16	59.6%	188	102,389	Suspension — 60.1%
2020	17	63.1%	176	104,919	Suspension — 51.7%

Common MOT Failures

Top failure categories across all test years for 2003 Mercedes C 320, with age trends.

Suspension

41.1%

↑ Increases with age

Brakes

29.3%

↑ Increases with age

Lamps, reflectors and electrical equipment

24.2%

↑ Increases with age

Tyres

21.4%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

19.9%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Suspension	10.1% (6 yrs)	51.7% (17 yrs)	+41.6%	🔴 ↑
Brakes	6.7% (6 yrs)	46.6% (17 yrs)	+39.9%	🔴 ↑
Tyres	10.6% (6 yrs)	33.5% (17 yrs)	+22.9%	🔴 ↑

Other Manufacture Years

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

← Back to Mercedes C 320 overview

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

About This Data

This page shows how Mercedes C 320 cars manufactured in 2003 perform at MOT as they age. Data spans from 2009 to 2020, covering 5,442 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.