What year Opel Manta Exec is most reliable?

Based on MOT first-test pass rates, the 1988 Opel Manta Exec has the highest pass rate at 78.2%, out of 598 vehicles tested.

What are the most common Opel Manta Exec MOT failures?

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

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Opel Manta Exec — Reliability by Year

1,587 vehicles · MOT data 1986–1988 · first-test pass rates

This page shows MOT first-test pass rates for each year the Opel Manta Exec 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

1988

78.2% pass rate · 598 vehicles

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Lowest pass rate year

1986

25.5% pass rate · 160 vehicles

Year	Pass rate	Avg mileage	Vehicles
1988	78.2%	51,685 mi	598
1987	58.5%	81,262 mi	829
1986	25.5%	63,125 mi	160

Which year Opel Manta Exec is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests. Green = noticeably above average for this model; red = noticeably below average.

Tests range from an average of 51,685 miles (newest year) to 81,262 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a Opel Manta Exec.

See the buying guide →

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