22,455 on UK roads in 2025-1,139 vs 2024
On the road
22,455
22,455 licensed
Change vs 2024
-4.8%
-1,139 cars
New in 2025
370
first-time registrations
Electrified
12%
hybrid, plug-in & battery
The Mercedes S CLASS has a steady presence on UK roads, with 22,455 licensed in 2025 - down 4.8% on 2024. 370 were registered new in 2025. The fleet is overwhelmingly diesel (68%), with most in the Over 3.0L class. Most date from the 2015-2019 era.
Licensed Mercedes S CLASS cars on the road over time
First-time registrations per year
Fuel, engine size and age across every Mercedes S 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 S Class holds up at its MOT and how it's driven - from 26,373 tests, tracked across 2022-2025.
Average for its class
86%
26,373 MOT tests in 2025 · 23,701 first-time
Pass rate over time
2022
84.9%
2023
85.5%
2024
85.2%
2025
86%
▲ 1.1 pts since 2022
First-time pass rate by the car's age (tested in 2025)
How a Mercedes S Class is driven
tracked across 2022-25miles a year, from 26,231 cars tracked across years
44.3%
low · <5k
43.8%
avg · 5-15k
11.9%
high · 15k+
Most cover 2,888-9,841 miles a year (median 5,671).
Yearly mileage as the car ages
Driven most when newer, easing as it gets older.
Mileage & condition
Odometer when tested (2025)
Typical odometer rising: 83,150 → 88,157 → 92,484 → 96,880
Pass rate as the odometer climbs
First-time pass rate by fuel
Diesel
16,232 tests
85.7%
Petrol
6,426 tests
86%
A 2025 Mercedes S Class passes first time 86% of the time - above the 77.6% UK average. The typical one is driven about 7,674 miles a year, and reliability is mostly about miles: 91.6% of low-mileage cars pass versus 83.7% past 120k.
Of 3,329 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 S CLASS, run its registration through AnalyzeMyCar for MOT history, mileage checks, service history and valuation.
