Opel Manta GT J — Reliability by Year
3,737 vehicles · MOT data 1981–1984 · first-test pass rates
This page shows MOT first-test pass rates for each year the Opel Manta GT J was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →
Which year Opel Manta GT J is most reliable?
MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests.
Tests range from an average of 65,616 miles (newest year) to 90,640 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →
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 GT J.
Check any UK registration — free MOT history and risk insights.