1999 Mercedes 312d Lwb — MOT History by Age

How cars manufactured in 1999 perform at MOT as they age

27 years

Current Age

51.3%

Latest Pass Rate

1,592

Total Tests (All Years)

208,110 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Compared to Average at Age 17

This car: 51.3%

Average: 53.5%

⚠️ 2.2% below average (9249 models compared)

How This Car Ages

Pass rate progression for the 1999 Mercedes 312d Lwb as it ages.

10 yrs51.4%

→ ↑7.2%

11 yrs58.6%

→ ↓3.9%

12 yrs54.7%

→ ↓3.7%

13 yrs51.0%

→ ↓2.2%

14 yrs48.8%

→ ↑6.5%

15 yrs55.3%

→ ↓1.3%

16 yrs54.0%

→ ↓2.7%

17 yrs51.3%

📊 View as table

Age	Pass Rate	Tests
10 yrs	51.4%	315
11 yrs	58.6%	263
12 yrs	54.7%	247
13 yrs	51.0%	200
14 yrs	48.8%	172
15 yrs	55.3%	152
16 yrs	54.0%	126
17 yrs	51.3%	117

Pass Rate Trend

How the 1999 Mercedes 312d Lwb pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2016 (17 yrs)	51.3%	117
2015 (16 yrs)	54%	126
2014 (15 yrs)	55.3%	152
2013 (14 yrs)	48.8%	172
2012 (13 yrs)	51%	200
2011 (12 yrs)	54.7%	247
2010 (11 yrs)	58.6%	263
2009 (10 yrs)	51.4%	315

Year-by-Year MOT Results

2009High Fail Rate

51.4%

Age (yrs) 10Tests 315Avg Mileage 198,090Top Failure Brakes — 36.2%

2010High Fail Rate

58.6%

Age (yrs) 11Tests 263Avg Mileage 205,215Top Failure Brakes — 31.9%

2011High Fail Rate

54.7%

Age (yrs) 12Tests 247Avg Mileage 208,664Top Failure Brakes — 34.4%

2012High Fail Rate

51.0%

Age (yrs) 13Tests 200Avg Mileage 220,686Top Failure Brakes — 38.5%

2013High Fail Rate

48.8%

Age (yrs) 14Tests 172Avg Mileage 214,776Top Failure Brakes — 128.5%

2014High Fail Rate

55.3%

Age (yrs) 15Tests 152Avg Mileage 214,186Top Failure Brakes — 104.6%

2015High Fail Rate

54.0%

Age (yrs) 16Tests 126Avg Mileage 229,954Top Failure Brakes — 104.8%

2016High Fail Rate

51.3%

Age (yrs) 17Tests 117Avg Mileage 208,110Top Failure Brakes — 121.4%

MOT results for 1999 Mercedes 312d Lwb by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	10	51.4%	315	198,090	Brakes — 36.2%
2010	11	58.6%	263	205,215	Brakes — 31.9%
2011	12	54.7%	247	208,664	Brakes — 34.4%
2012	13	51.0%	200	220,686	Brakes — 38.5%
2013	14	48.8%	172	214,776	Brakes — 128.5%
2014	15	55.3%	152	214,186	Brakes — 104.6%
2015	16	54.0%	126	229,954	Brakes — 104.8%
2016	17	51.3%	117	208,110	Brakes — 121.4%

Common MOT Failures

Top failure categories across all test years for 1999 Mercedes 312d Lwb, with age trends.

Brakes

75.0%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

59.0%

↑ Increases with age

Suspension

49.8%

↑ Increases with age

Body, Structure and General Items

25.0%

↓ Decreases with age

Driver's View of the Road

15.0%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Brakes	36.2% (10 yrs)	121.4% (17 yrs)	+85.2%	🔴 ↑
Suspension	25.7% (10 yrs)	90.6% (17 yrs)	+64.9%	🔴 ↑
Lamps, Reflectors and Electrical Equipment	33.0% (10 yrs)	90.6% (17 yrs)	+57.6%	🔴 ↑

Other Manufacture Years

1995 1996 1997 1998 1999 2000

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About This Data

This page shows how Mercedes 312d Lwb cars manufactured in 1999 perform at MOT as they age. Data spans from 2009 to 2016, covering 1,592 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.