Know Your MOT

Morgan 4/4 vs Morgan Roadster: MOT reliability compared

Updated 05 September 2026.

12.6%
Morgan Roadster MOT failure rate, 2.8 pts lower than Morgan 4/4

Morgan Roadster is the more reliable MOT performer: 12.6% of Morgan Roadster MOTs fail versus 15.4% for Morgan 4/4, a 2.8 point gap.

MetricMorgan 4/4Morgan Roadster
MOT failure rate15.4%12.6%
Tests analysed55,5819,692
Most common failureBrakes (31.7%)Lamps & electrical (23.8%)

Questions and answers

Which is more reliable, Morgan 4/4 or Morgan Roadster?

Morgan Roadster is the more reliable MOT performer: 12.6% of Morgan Roadster MOTs fail versus 15.4% for Morgan 4/4, a 2.8 point gap.

What is the MOT failure rate of the Morgan 4/4?

15.4% of Morgan 4/4 MOT tests result in a failure, from 55,581 tests.

What is the MOT failure rate of the Morgan Roadster?

12.6% of Morgan Roadster MOT tests result in a failure, from 9,692 tests.

Compared here

Morgan 4/4 common MOT failures and failure rateMorgan Roadster common MOT failures and failure rate