121 on UK roads in 2025-19 vs 2024
On the road
121
121 licensed
Change vs 2024
-13.6%
-19 cars
New in 2025
0
first-time registrations
Electrified
0%
hybrid, plug-in & battery
The Alfa Romeo 166 is a rare sight on UK roads, with 121 licensed in 2025 - down 13.6% on 2024. None were registered new in 2025, so the fleet can only shrink as cars are retired. The fleet is overwhelmingly petrol (100%), with most in the Over 3.0L class. Most date from the 2000-2004 era.
Licensed Alfa Romeo 166 cars on the road over time
First-time registrations per year
Fuel, engine size and age across every Alfa Romeo 166 on the road today.
Engine size
Cars on the road by engine capacity
How old are they?
Share of cars by the year they were first registered
How a Alfa Romeo 166 holds up at its MOT and how it's driven - from 228 tests, tracked across 2022-2025.
Average for its class
56.1%
228 MOT tests in 2025 · 173 first-time
Pass rate over time
2022
61%
2023
68.9%
2024
65.8%
2025
56.1%
▼ 4.9 pts since 2022
First-time pass rate by the car's age (tested in 2025)
How a Alfa Romeo 166 is driven
tracked across 2022-25miles a year, from 222 cars tracked across years
85.6%
low · <5k
13.1%
avg · 5-15k
1.4%
high · 15k+
Most cover 721-3,314 miles a year (median 1,897).
Yearly mileage as the car ages
Driven most when newer, easing as it gets older.
Mileage & condition
Odometer when tested (2025)
Typical odometer rising: 106,463 → 104,024 → 104,803 → 104,474
Pass rate as the odometer climbs
First-time pass rate by fuel
Not enough data.
A 2025 Alfa Romeo 166 passes first time 56.1% of the time - below the 77.6% UK average, and easing slightly year on year. The typical one is driven about 2,965 miles a year, and reliability is mostly about miles: 66.7% of low-mileage cars pass versus 51% past 120k.
Of 76 first-time fails, here's what gets flagged most. Most cars fail on more than one item, so shares add up past 100%.
Share of failed tests, by area
Exact items most often recorded as the reason a car failed
Before you buy a specific Alfa Romeo 166, run its registration through AnalyzeMyCar for MOT history, mileage checks, service history and valuation.
