Alfa Romeo 166

Reliability, estimated running costs, and MOT data across 7 model years from 371 MOT tests in 2024.

Avg Pass Rate

71%

Total Tests

371

Model Years

1999 to 2005

Years Covered

About the Alfa Romeo 166

The Alfa Romeo 166 was MOT tested 371 times in 2024 (DVSA data, retests included) across 7 model years (1999 to 2005), with an average pass rate of 71%. That's 11 points below the average of 82% across all models in our data, so check the year-by-year data carefully before buying. Our records list petrol versions.

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.

Estimated Running Costs

Fuel (Petrol, 1970cc)

£1,631

Road Tax

£325

MOT Test

£55

Predicted Repairs

Higher due to low pass rate

£500

Total per year£2,511

Per month£209/mo

Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.

Full 2005 details

How reliable is the Alfa Romeo 166?

vs average of all models-11% (82% avg)

vs Alfa Romeo brand average-9% (80% avg)

Alfa Romeo 166 by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

Year	Pass Rate	Tests	Avg Mileage
2005	73%	73	100,480 mi
2004	79%	61	107,938 mi
2003	63%	35	92,585 mi
2002	66%	47	90,786 mi
2001	69%	67	104,185 mi
2000	62%	45	111,782 mi
1999	84%	43	127,482 mi

Questions about the Alfa Romeo 166

Is the Alfa Romeo 166 reliable?

Across its 7 model years in our data (1999 to 2005), the Alfa Romeo 166 averages a 71% MOT pass rate, from 371 tests (DVSA MOT data for tests in 2024, retests included). That's 11 points below the average of 82% across all models in the same data.