1997 Mercedes Slk 230k — MOT History by Age

How cars manufactured in 1997 perform at MOT as they age

29 years

Current Age

64.7%

Latest Pass Rate

19,914

Total Tests (All Years)

92,179 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Insufficient data for same-age comparison.

How This Car Ages

Pass rate progression for the 1997 Mercedes Slk 230k as it ages.

12 yrs69.4%

→ ↓1.0%

13 yrs68.4%

→ ↓3.0%

14 yrs65.4%

→ ↑0.4%

15 yrs65.8%

→ ↓0.6%

16 yrs65.2%

→ ↓0.8%

17 yrs64.4%

→ ↑1.3%

18 yrs65.7%

→ ↓1.8%

19 yrs63.9%

→ ↑0.4%

20 yrs64.3%

→ ↑1.1%

21 yrs65.4%

→ ↓0.2%

22 yrs65.2%

→ ↓0.5%

23 yrs64.7%

📊 View as table

Age	Pass Rate	Tests
12 yrs	69.4%	2,099
13 yrs	68.4%	2,036
14 yrs	65.4%	2,060
15 yrs	65.8%	1,988
16 yrs	65.2%	1,939
17 yrs	64.4%	1,873
18 yrs	65.7%	1,820
19 yrs	63.9%	1,705
20 yrs	64.3%	1,553
21 yrs	65.4%	1,013
22 yrs	65.2%	1,003
23 yrs	64.7%	825

Pass Rate Trend

How the 1997 Mercedes Slk 230k pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2020 (23 yrs)	64.7%	825
2019 (22 yrs)	65.2%	1,003
2018 (21 yrs)	65.4%	1,013
2017 (20 yrs)	64.3%	1,553
2016 (19 yrs)	63.9%	1,705
2015 (18 yrs)	65.7%	1,820
2014 (17 yrs)	64.4%	1,873
2013 (16 yrs)	65.2%	1,939
2012 (15 yrs)	65.8%	1,988
2011 (14 yrs)	65.4%	2,060
2010 (13 yrs)	68.4%	2,036
2009 (12 yrs)	69.4%	2,099

Year-by-Year MOT Results

2009

69.4%

Age (yrs) 12Tests 2,099Avg Mileage 72,442Top Failure Lamps, Reflectors and Electrical Equipment — 19.6%

2010

68.4%

Age (yrs) 13Tests 2,036Avg Mileage 76,510Top Failure Lamps, Reflectors and Electrical Equipment — 20.2%

2011

65.4%

Age (yrs) 14Tests 2,060Avg Mileage 80,211Top Failure Lamps, Reflectors and Electrical Equipment — 23.5%

2012

65.8%

Age (yrs) 15Tests 1,988Avg Mileage 85,162Top Failure Lamps, Reflectors and Electrical Equipment — 23.1%

2013

65.2%

Age (yrs) 16Tests 1,939Avg Mileage 85,999Top Failure Lamps, Reflectors and Electrical Equipment — 50.5%

2014High Fail Rate

64.4%

Age (yrs) 17Tests 1,873Avg Mileage 89,610Top Failure Lamps, Reflectors and Electrical Equipment — 49.5%

2015

65.7%

Age (yrs) 18Tests 1,820Avg Mileage 91,025Top Failure Lamps, Reflectors and Electrical Equipment — 48.9%

2016High Fail Rate

63.9%

Age (yrs) 19Tests 1,705Avg Mileage 93,027Top Failure Lamps, Reflectors and Electrical Equipment — 54.3%

2017High Fail Rate

64.3%

Age (yrs) 20Tests 1,553Avg Mileage 95,260Top Failure Lamps, Reflectors and Electrical Equipment — 55.6%

2018

65.4%

Age (yrs) 21Tests 1,013Avg Mileage 96,001Top Failure Brakes — 34.2%

2019

65.2%

Age (yrs) 22Tests 1,003Avg Mileage 94,817Top Failure Lamps, reflectors and electrical equipment — 53.9%

2020High Fail Rate

64.7%

Age (yrs) 23Tests 825Avg Mileage 92,179Top Failure Lamps, reflectors and electrical equipment — 51.8%

MOT results for 1997 Mercedes Slk 230k by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	12	69.4%	2,099	72,442	Lamps, Reflectors and Electrical Equipment — 19.6%
2010	13	68.4%	2,036	76,510	Lamps, Reflectors and Electrical Equipment — 20.2%
2011	14	65.4%	2,060	80,211	Lamps, Reflectors and Electrical Equipment — 23.5%
2012	15	65.8%	1,988	85,162	Lamps, Reflectors and Electrical Equipment — 23.1%
2013	16	65.2%	1,939	85,999	Lamps, Reflectors and Electrical Equipment — 50.5%
2014	17	64.4%	1,873	89,610	Lamps, Reflectors and Electrical Equipment — 49.5%
2015	18	65.7%	1,820	91,025	Lamps, Reflectors and Electrical Equipment — 48.9%
2016	19	63.9%	1,705	93,027	Lamps, Reflectors and Electrical Equipment — 54.3%
2017	20	64.3%	1,553	95,260	Lamps, Reflectors and Electrical Equipment — 55.6%
2018	21	65.4%	1,013	96,001	Brakes — 34.2%
2019	22	65.2%	1,003	94,817	Lamps, reflectors and electrical equipment — 53.9%
2020	23	64.7%	825	92,179	Lamps, reflectors and electrical equipment — 51.8%

Common MOT Failures

Top failure categories across all test years for 1997 Mercedes Slk 230k, with age trends.

Lamps, reflectors and electrical equipment

45.2%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

36.5%

— Consistent

Brakes

28.5%

↑ Increases with age

Suspension

21.2%

↑ Increases with age

Tyres

17.1%

↑ 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
Suspension	7.2% (12 yrs)	37.3% (23 yrs)	+30.1%	🔴 ↑
Brakes	10.7% (12 yrs)	38.2% (23 yrs)	+27.5%	🔴 ↑
Tyres	11.7% (12 yrs)	27.3% (23 yrs)	+15.6%	🔴 ↑

Other Manufacture Years

1996 1997 1998 1999 2000 2001 2002 2003 2004

← Back to Mercedes Slk 230k overview

Looking for the best year to buy? See the full comparison on the Mercedes Slk 230k page →

About This Data

This page shows how Mercedes Slk 230k cars manufactured in 1997 perform at MOT as they age. Data spans from 2009 to 2020, covering 19,914 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.