342,485 on UK roads in 2025-16,099 vs 2024
On the road
342k
342,485 licensed
Change vs 2024
-4.5%
-16,099 cars
New in 2025
3,978
first-time registrations
Electrified
11.2%
hybrid, plug-in & battery
The Mercedes C CLASS is a common sight on UK roads, with 342,485 licensed in 2025 - down 4.5% on 2024. 3,978 were registered new in 2025. The fleet is overwhelmingly diesel (60%), with most in the 2.0-3.0L class. Most date from the 2015-2019 era.
Licensed Mercedes C CLASS cars on the road over time
First-time registrations per year
Fuel, engine size and age across every Mercedes C CLASS 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 Mercedes C Class holds up at its MOT and how it's driven - from 59 tests, tracked across 2022-2025.
Average for its class
86.8%
59 MOT tests in 2025 · 53 first-time
Pass rate over time
2022
68.6%
2023
72.3%
2024
71.7%
2025
86.8%
▲ 18.2 pts since 2022
First-time pass rate by the car's age (tested in 2025)
How a Mercedes C Class is driven
tracked across 2022-25miles a year, from 50 cars tracked across years
48%
low · <5k
48%
avg · 5-15k
4%
high · 15k+
Most cover 3,269-8,616 miles a year (median 5,173).
Yearly mileage as the car ages
Driven most when newer, easing as it gets older.
Mileage & condition
Odometer when tested (2025)
Typical odometer rising: 108,992 → 102,356 → 110,974 → 96,789
Pass rate as the odometer climbs
First-time pass rate by fuel
Not enough data.
A 2025 Mercedes C Class passes first time 86.8% of the time - above the 77.6% UK average. The typical one is driven about 5,963 miles a year, and reliability is mostly about miles: 100% of low-mileage cars pass versus 77.8% past 120k.
Of 7 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 Mercedes C CLASS, run its registration through AnalyzeMyCar for MOT history, mileage checks, service history and valuation.
