What year Colt Sigma is most reliable?

Based on MOT first-test pass rates, the 1982 Colt Sigma has the highest pass rate at 0.0%, out of 209 vehicles tested.

What are the most common Colt Sigma MOT failures?

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

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4,051 vehicles · MOT data 1980–1982 · first-test pass rates

Best pass rate year

1982

0.0% first-test pass rate · 209 vehicles

Lowest pass rate year

1980

0.0% first-test pass rate · 2,117 vehicles

Year	Pass rate	Avg mileage	Vehicles
1982	0.0%	—	209
1981	0.0%	43,406 mi	1,725
1980	0.0%	—	2,117

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