Infiniti M
Reliability, running costs, and MOT data across 4 years from 361 real MOT tests.
Avg Pass Rate
87%
Total Tests
361
Best Year
2014 (92%)
Years Covered
4
How reliable is the Infiniti M?
Infiniti M by Year
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About the Infiniti M
The Infiniti M has been tested 361 times in 2024 MOT data across 4 model years (2011 to 2014), with an average pass rate of 87%. That's slightly above the national average of 82%. Available as petrol and diesel and hybrid.
Best and Worst Years
The 2014 model is the most reliable with a 92% pass rate from 62 tests. The 2012 model has the lowest at 78%. The 14 point spread between years means reliability varies somewhat, but no year is dramatically different.
Reliability Trend
Newer INFINITI Ms show better MOT pass rates than older ones, with an average improvement of 6 percentage points.
Mileage Across Years
The oldest model in our data (2011) averages 94,553 miles, while the newest (2014) averages 79,054 miles.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.