18,199 on UK roads in 2025-187 vs 2024
On the road
18,199
18,199 licensed
Change vs 2024
-1%
-187 cars
New in 2025
1
first-time registrations
Electrified
7.2%
hybrid, plug-in & battery
The Seat MII has a steady presence on UK roads, with 18,199 licensed in 2025 - down 1% on 2024. 1 was registered new in 2025. The fleet is overwhelmingly petrol (93%), with most in the 1.0-1.6L class. Most date from the 2015-2019 era.
Licensed Seat MII cars on the road over time
First-time registrations per year
Fuel, engine size and age across every Seat MII on the road today.
Current split
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 Seat Mii holds up at its MOT and how it's driven - from 20,356 tests, tracked across 2022-2025.
Average for its class
80.9%
20,356 MOT tests in 2025 · 17,231 first-time
Pass rate over time
2022
87%
2023
84.9%
2024
82.4%
2025
80.9%
▼ 6.1 pts since 2022
First-time pass rate by the car's age (tested in 2025)
How a Seat Mii is driven
tracked across 2022-25miles a year, from 17,366 cars tracked across years
52.6%
low · <5k
45.4%
avg · 5-15k
2%
high · 15k+
Most cover 2,830-7,252 miles a year (median 4,780).
Yearly mileage as the car ages
Driven most when newer, easing as it gets older.
Mileage & condition
Odometer when tested (2025)
Typical odometer rising: 41,154 → 46,403 → 51,804 → 56,726
Pass rate as the odometer climbs
First-time pass rate by fuel
Petrol
17,227 tests
80.9%
A 2025 Seat Mii passes first time 80.9% of the time - above the 77.6% UK average, and easing slightly year on year. The typical one is driven about 5,482 miles a year, and reliability is mostly about miles: 89% of low-mileage cars pass versus 65.9% past 120k.
Of 3,294 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 Seat MII, run its registration through AnalyzeMyCar for MOT history, mileage checks, service history and valuation.
