Alfa Romeo 166 (2004)

Estimated running costs and MOT pass rates from 61 MOT tests in 2024.

Annual Cost

£2,958

£247/month

MOT Pass Rate

79%

Average

Road Tax

£445

Estimated/year

Est. Insurance

Grp 30-42

2959cc Petrol

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79% pass rate, £2,958/year to run. Close to the average across all models.

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Petrol2959cc22 years old61 tests108k miles avg

Annual Running Costs

Fuel (Petrol, 2959cc)

~30 mpg

£1,958

Road Tax

Estimated CO2 band

£445

MOT Test

£55

Predicted Repairs

£500

Total per year£2,958

Per month£247/mo

Per week£57/wk

Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included.

Reliability Verdict

79% MOT pass rate(Average)

0%All-model avg: 82%100%

Average reliability. Expect some repairs as it ages. That's close to the average of 82% across all models in our data.

79% of MOT tests on Alfa Romeo 166s from 2004 ended in a pass in 2024, when they were about 20 years old. That's based on 61 tests across the UK, retests included. The average mileage recorded at those tests was 107,938 miles.

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How Does It Compare?

Rank among 2004 models133rd of 470(top half)

Rank among Alfa Romeo models75th of 158(top half)

vs average of all models-3%(82% avg)

vs 2004 models average+7%(72% avg)

vs Alfa Romeo average-1%(80% avg)

Mileage Analysis

107,938

Average miles

148,000

Expected for age

The average 2004 Alfa Romeo 166 had 107,938 miles on the clock at its 2024 MOT, which is below the expected 148,000 miles for a 20-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Alfa Romeo 166 by Year

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

Similar Cars to Consider

Land Rover Freelander

2006 · 3192cc Petrol

£3,303/year

70%

-9%

Mercedes E

2004 · 3199cc Petrol

£3,303/year

78%

-1%

Nissan X-Trail

2006 · 2488cc Petrol

£3,158/year

67%

-12%

Porsche Boxster

2005 · 3197cc Petrol

£3,153/year

86%

+7%

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About the 2004 Alfa Romeo 166

The 2004 Alfa Romeo 166 is a premium performance car. Our records list a 2959cc petrol engine, though engines vary between versions. 61 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. Among all models from 2004, the average MOT pass rate is 72%, and this model beats that benchmark.

With an average of 107,938 miles recorded at its 2024 MOT tests, Alfa Romeo 166 owners tend to use this car less than the typical driver.

2004 Alfa Romeo 166 Fuel Costs

The 2959cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,958 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year).

What does it cost to own a 2004 Alfa Romeo 166?

Total estimated annual running cost is £2,958 (£247/month), broken down as £1,958 fuel, £445 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 79% pass rate. Keeping on top of servicing will help avoid surprises.

Buying a Used 2004 Alfa Romeo 166

At 22 years old, the Alfa Romeo 166 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. Note: with only 61 tests in our data, these figures should be treated as indicative rather than definitive.

Common Issues to Watch For

These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.

Timing Chain / Belt

Watch out

At 22 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.

Oil Consumption

Medium risk

Larger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.

Rust and Corrosion

Watch out

At 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.

Suspension Bushings

Watch out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

Clutch Wear

Watch out

With an average of 108k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.

Brake Discs and Pads

Medium risk

High-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2004 Alfa Romeo 166 stacks up against similar cars for estimated annual running costs, insurance group, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Est. Ins. Group	Total/yr
Alfa Romeo 166(2004)	79%	£1,958	£445	Grp 30-42	£2,958
Land Rover Freelander(2006)	70%	£1,958	£790	Grp 35-50	£3,303+£345
Mercedes E(2004)	78%	£1,958	£790	Grp 35-50	£3,303+£345
Nissan X-Trail(2006)	67%	£1,958	£445	Grp 25-38	£3,158+£200
Porsche Boxster(2005)	86%	£1,958	£790	Grp 35-50	£3,153+£195

Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.

Questions about the 2004 Alfa Romeo 166

Is the 2004 Alfa Romeo 166 reliable?

Average reliability. Expect some repairs as it ages. 79% of MOT tests on 2004 Alfa Romeo 166s ended in a pass, from 61 tests (DVSA MOT data for tests in 2024, retests included). That's 3 points below the average of 82% across all models in the same data.

How much does a 2004 Alfa Romeo 166 cost to run?

Our estimate is £2,958 a year (£247 a month): £1,958 fuel, £445 road tax, £55 MOT and £500 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2004 Alfa Romeo 166?

79% of 61 MOT tests on the 2004 Alfa Romeo 166 ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 133rd of 470 models first registered in 2004 (top half).

What is the average mileage for a 2004 Alfa Romeo 166?

The average mileage recorded at MOT tests on the 2004 Alfa Romeo 166 is 107,938 miles, which is below the expected 148,000 miles for a 20-year-old car. This suggests lighter use than average, which generally means less wear on major components.