What year Opel Monza Auto is most reliable?

Based on MOT first-test pass rates, the 1980 Opel Monza Auto has the highest pass rate at 83.3%, out of 272 vehicles tested.

What are the most common Opel Monza Auto MOT failures?

The most common Opel Monza Auto MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Opel Monza Auto — Reliability by Year

526 vehicles · MOT data 1980–1982 · first-test pass rates

This page shows MOT first-test pass rates for each year the Opel Monza Auto was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

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Best pass rate year

1980

83.3% pass rate · 272 vehicles

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Lowest pass rate year

1981

50.0% pass rate · 131 vehicles

Year	Pass rate	Avg mileage	Vehicles
1982	—	—	123
1981	50.0%	122,106 mi	131
1980	83.3%	72,640 mi	272

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