What year MG B GT is most reliable?

Based on MOT first-test pass rates, the 1980 MG B GT has the highest pass rate at 71.1%, out of 2,074 vehicles tested.

What are the most common MG B GT MOT failures?

The most common MG B GT MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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MG B GT — Reliability by Year

3,229 vehicles · MOT data 1980–1981 · first-test pass rates

This page shows MOT first-test pass rates for each year the MG B GT 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

71.1% pass rate · 2,074 vehicles

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Lowest pass rate year

1981

70.2% pass rate · 1,155 vehicles

Year	Pass rate	Avg mileage	Vehicles
1981	70.2%	55,708 mi	1,155
1980	71.1%	52,681 mi	2,074

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