CarVerify

Free Car Check

KN21 OBF

2021 Mercedes-benz S-class

Black Petrol 3982cc
Search another vehicle

MOT Status

Valid
Expires25 Nov 2026
Tests3 (3 pass, 0 fail)
Pass rate100%

Mileage

15,301 mi
Last recorded15,301 miles
Recorded on26 Nov 2025
Typical for 2021 Mercedes-benz S-class32,818 mi

Below or average mileage for this year

4 checks still locked for this Mercedes-benz
Stolen
Finance
Write-off
Keepers
Unlock full report — £4.99
Instant £30k guarantee
or single check £9.99

Not all car check providers offer a guarantee. Don't risk buying from services that can't back their data. CarVerify reports include a £30,000 finance data guarantee.

Vehicle Details

RegistrationKN21 OBF
MakeMercedes-benz
ModelS-class
Year2021
ColourBlack
Fuel typePetrol
Engine3,982cc

All premium checks include

50+ data points
Finance Check (Experian) Insurance Write-off Salvage Auction Stolen Check Previous Owners Ex-Taxi, Police, NHS Mileage Anomaly Import / Export Scrapped Check Plate Changes

MOT History

3 pass
Pass 26 Nov 2025 15,301 miles

Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Rear Child Seat fitted not allowing full inspection of adult belt both sides ()

Rear Registration plate deteriorated but not likely to be misread (0.1 (b))

Pass 21 Nov 2024 10,708 miles

Rear Registration plate deteriorated but not likely to be misread (0.1 (b))

Pass 21 Nov 2023 7,790 miles

How Reliable is the Mercedes-benz S-class?

Based on 692,220 MOT tests across 62,130 vehicles.

80.6%
Pass Rate
6,086
Miles/Year
39
Year Lifespan
62,130
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 25,613
Brake pipe excessively corroded 8,895
Parking brake: efficiency below requirements 6,706
Suspension arm has excessive play in a ball joint 6,018
Windscreen wiper does not clear the windscreen effectively 5,811
Full Mercedes-benz S-class reliability report

Don't risk it. Know before you buy.

Not all vehicle check providers are the same. Some don't offer a data guarantee, which means if their information is wrong, you're on your own. Every CarVerify report is backed by a £30,000 finance data guarantee.

£30k guarantee Instant results Cancel anytime

KN21 OBF is a 2021 Mercedes-benz S-class in Black with a 3,982cc petrol engine. This vehicle has been through 3 MOT tests with a personal pass rate of 100%.

Across all 2021 Mercedes-benz S-class models, the average MOT pass rate is 90.9% with a typical mileage of 32,818 miles. This particular vehicle has performed better than the average for its year.

The most common reason a Mercedes-benz S-class fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 25,613 recorded failures. If you're considering buying KN21 OBF, it's worth having these areas checked by a mechanic before committing.

The Mercedes-benz S-class typically stays on UK roads for around 39 years. At 5 years old, this Mercedes-benz S-class is still in the earlier part of its expected life.

Frequently Asked Questions

How do I check the history of KN21 OBF?

You can check the full history of KN21 OBF by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was KN21 OBF registered?

KN21 OBF is a 2021 Mercedes-benz S-class, first registered on 25 March 2021.

Is KN21 OBF safe to buy?

The MOT history for KN21 OBF shows 3 tests with a 100% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does KN21 OBF have outstanding finance?

Finance checks require a premium vehicle report. This checks against all major UK finance providers to see if there is any outstanding finance on KN21 OBF. If you buy a car with outstanding finance, the finance company can repossess it.

No warranty or guarantee of accuracy is provided for any free data on this page. The data guarantee applies only to information obtained through the purchase of a full check.