1985 Opel Monza — MOT History by Age

How cars manufactured in 1985 perform at MOT as they age

41 years

Current Age

88.4%

Latest Pass Rate

347

Total Tests (All Years)

88,105 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Best vintage for Monza

Insufficient data for same-age comparison.

How This Car Ages

Pass rate progression for the 1985 Opel Monza as it ages.

24 yrs56.9%

→ ↓0.5%

25 yrs56.4%

→ ↑5.4%

26 yrs61.8%

→ ↑5.7%

27 yrs67.5%

→ ↓13.2%

28 yrs54.3%

→ ↑15.4%

29 yrs69.7%

→ ↓8.6%

30 yrs61.1%

→ ↑13.9%

31 yrs75.0%

→ ↑13.4%

39 yrs88.4%

📊 View as table

Age	Pass Rate	Tests
24 yrs	56.9%	51
25 yrs	56.4%	39
26 yrs	61.8%	34
27 yrs	67.5%	40
28 yrs	54.3%	35
29 yrs	69.7%	33
30 yrs	61.1%	36
31 yrs	75.0%	36
39 yrs	88.4%	43

Pass Rate Trend

How the 1985 Opel Monza pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (39 yrs)	88.4%	43
2016 (31 yrs)	75%	36
2015 (30 yrs)	61.1%	36
2014 (29 yrs)	69.7%	33
2013 (28 yrs)	54.3%	35
2012 (27 yrs)	67.5%	40
2011 (26 yrs)	61.8%	34
2010 (25 yrs)	56.4%	39
2009 (24 yrs)	56.9%	51

Year-by-Year MOT Results

2009High Fail Rate

56.9%

Age (yrs) 24Tests 51Avg Mileage 93,663Top Failure Suspension — 27.5%

2010High Fail Rate

56.4%

Age (yrs) 25Tests 39Avg Mileage 97,065Top Failure Suspension — 25.6%

2011High Fail Rate

61.8%

Age (yrs) 26Tests 34Avg Mileage 91,979Top Failure Lamps, Reflectors and Electrical Equipment — 26.5%

2012

67.5%

Age (yrs) 27Tests 40Avg Mileage 89,400Top Failure Exhaust, Fuel and Emissions — 22.5%

2013High Fail Rate

54.3%

Age (yrs) 28Tests 35Avg Mileage 88,138Top Failure Lamps, Reflectors and Electrical Equipment — 77.1%

2014

69.7%

Age (yrs) 29Tests 33Avg Mileage 91,037Top Failure Lamps, Reflectors and Electrical Equipment — 54.5%

2015High Fail Rate

61.1%

Age (yrs) 30Tests 36Avg Mileage 89,762Top Failure Lamps, Reflectors and Electrical Equipment — 50.0%

2016

75.0%

Age (yrs) 31Tests 36Avg Mileage 82,034Top Failure Suspension — 27.8%

2024

88.4%

Age (yrs) 39Tests 43Avg Mileage 88,105Top Failure Suspension — 11.6%

MOT results for 1985 Opel Monza by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	24	56.9%	51	93,663	Suspension — 27.5%
2010	25	56.4%	39	97,065	Suspension — 25.6%
2011	26	61.8%	34	91,979	Lamps, Reflectors and Electrical Equipment — 26.5%
2012	27	67.5%	40	89,400	Exhaust, Fuel and Emissions — 22.5%
2013	28	54.3%	35	88,138	Lamps, Reflectors and Electrical Equipment — 77.1%
2014	29	69.7%	33	91,037	Lamps, Reflectors and Electrical Equipment — 54.5%
2015	30	61.1%	36	89,762	Lamps, Reflectors and Electrical Equipment — 50.0%
2016	31	75.0%	36	82,034	Suspension — 27.8%
2024	39	88.4%	43	88,105	Suspension — 11.6%

Common MOT Failures

Top failure categories across all test years for 1985 Opel Monza, with age trends.

Lamps, Reflectors and Electrical Equipment

35.7%

↑ Increases with age

Brakes

26.8%

— Consistent

Suspension

26.3%

↓ Decreases with age

Exhaust, Fuel and Emissions

19.6%

↓ Decreases with age

Body, Structure and General Items

14.9%

↓ Decreases 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	27.5% (24 yrs)	11.6% (39 yrs)	-15.9%	🟢 ↓

Other Manufacture Years

1985 1986

← Back to Opel Monza overview

Looking for the best year to buy? See the full comparison on the Opel Monza page →

About This Data

This page shows how Opel Monza cars manufactured in 1985 perform at MOT as they age. Data spans from 2009 to 2024, covering 347 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.