What year Alfa Romeo 166 is most reliable?

Based on MOT first-test pass rates, the 2004 Alfa Romeo 166 has the highest pass rate at 70.7%, out of 110 vehicles tested.

What are the most common Alfa Romeo 166 MOT failures?

The most common Alfa Romeo 166 MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Alfa Romeo 166 — Reliability by Year

2,901 vehicles · MOT data 1999–2005 · first-test pass rates

This page shows MOT first-test pass rates for each year the Alfa Romeo 166 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

2004

70.7% pass rate · 110 vehicles

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Lowest pass rate year

1999

64.3% pass rate · 910 vehicles

Year	Pass rate	Avg mileage	Vehicles
2005	70.4%	72,320 mi	106
2004	70.7%	83,571 mi	110
2003	69.5%	68,149 mi	160
2002	67.1%	75,196 mi	253
2001	66.2%	81,219 mi	563
2000	65.0%	90,006 mi	799
1999	64.3%	93,349 mi	910

Which year Alfa Romeo 166 is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests. Green = noticeably above average for this model; red = noticeably below average.

Tests range from an average of 68,149 miles (newest year) to 93,349 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a Alfa Romeo 166.

See the buying guide →

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