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KN21 SFF

2021 Mercedes-benz S-class

Grey Petrol 3982cc
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MOT Status

Valid
Expires24 Mar 2027
Tests3 (3 pass, 0 fail)
Pass rate100%

Mileage

52,480 mi
Last recorded52,480 miles
Recorded on21 Mar 2026
Typical for 2021 Mercedes-benz S-class32,818 mi

Significantly above average — investigate

4 checks still locked for this Mercedes-benz
Stolen
Finance
Write-off
Keepers
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Vehicle Details

RegistrationKN21 SFF
MakeMercedes-benz
ModelS-class
Year2021
ColourGrey
Fuel typePetrol
Engine3,982cc

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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 21 Mar 2026 52,480 miles

Nearside Front Tyre has a cut but not deep enough to reach the ply or cords (5.2.3 (d) (i))

Pass 22 Mar 2025 39,326 miles
Pass 22 Mar 2024 27,753 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

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KN21 SFF is a 2021 Mercedes-benz S-class in Grey 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 SFF, 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 SFF?

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

What year was KN21 SFF registered?

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

Is KN21 SFF safe to buy?

The MOT history for KN21 SFF 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 SFF 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 SFF. 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.