Alfa romeo 166
Reliability, running costs, and MOT data across 7 years from 371 real MOT tests.
Avg Pass Rate
71%
Total Tests
371
Best Year
1999 (84%)
Years Covered
7
How reliable is the Alfa romeo 166?
Alfa romeo 166 by Year
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About the Alfa romeo 166
The Alfa romeo 166 has been tested 371 times in 2024 MOT data across 7 model years (1999 to 2005), with an average pass rate of 71%. That's 11 points below the national average of 82%, so check the year-by-year data carefully before buying. Available as petrol.
Best and Worst Years
The 1999 model is the most reliable with a 84% pass rate from 43 tests. The 2000 model has the lowest at 62%. With a 22 point spread, choosing the right year makes a big difference to reliability.
Reliability Trend
Newer ALFA ROMEO 166s show better MOT pass rates than older ones, with an average improvement of 7 percentage points.
Mileage Across Years
The oldest model in our data (1999) averages 127,482 miles, while the newest (2005) averages 100,480 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.
Compared to the Alfa romeo brand average of 80%, the 166 is 9 points lower, placing it among the less reliable Alfa romeo models.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.