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KN12 UNK

2012 Mercedes-benz C

Black Diesel 2143cc
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MOT Status

Valid
Expires9 Dec 2026
Tests19 (12 pass, 7 fail)
Pass rate63.2%

Mileage

167,604 mi
Last recorded167,604 miles
Recorded on10 Dec 2025
Typical for 2012 Mercedes-benz C71,143 mi

Significantly above average — investigate

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

RegistrationKN12 UNK
MakeMercedes-benz
ModelC
Year2012
ColourBlack
Fuel typeDiesel
Engine2,143cc

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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

12 pass 7 fail
Pass 10 Dec 2025 167,604 miles

Nearside Front Lower Suspension component ball joint has slight play (5.3.4 (a) (i))

Pass 10 Dec 2024 154,435 miles
Fail 25 Nov 2024 154,240 miles

Central Exhaust has a major leak of exhaust gases (6.1.2 (a))

Exhaust emissions exceed manufacturer's specified limit exceed manufacturer's specified limit: 0.50 (8.2.2.2 (a))

Pass 24 Nov 2023 140,438 miles

Front Oil leak, but not excessive (8.4.1 (a) (i))

Pass 11 Nov 2022 125,477 miles
Fail 11 Nov 2022 125,477 miles

Offside Front Lower Anti-roll bar ball joint excessively worn (5.3.4 (a) (i))

Pass 30 Nov 2021 110,241 miles

Nearside Front Inner Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Fail 30 Nov 2021 110,241 miles

Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h))

Nearside Front Inner Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Pass 2 Dec 2020 99,329 miles

Nearside Front Brake pad(s) wearing thin (1.1.13 (a) (ii))

Fail 27 Nov 2020 99,316 miles

Central Brake pipe excessively corroded front to rear x2 near fuel tank (1.1.11 (c))

Offside Rear Brake pipe excessively corroded Above rear axle (1.1.11 (c))

Nearside Front Brake pad(s) wearing thin (1.1.13 (a) (ii))

Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Pass 24 May 2019 80,851 miles

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

Pass 2 May 2018 66,160 miles

Manufactures engine and body covers fitted restricting inspection of components

Nearside Front Lower Anti-roll bar linkage ball joint dust cover deteriorated, but preventing the ingress of dirt (2.4.G.2)

Fail 28 Apr 2018 66,146 miles

Nearside rear brake binding (3.7.B.1)

Offside Front Brake pipe excessively corroded out to flexible brake hose (3.6.B.2c)

Offside Front Lower Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt (2.4.G.2)

front brake application uneven (3.7.B.2)

Front brake disc worn, pitted or scored, but not seriously weakened worn (3.5.1i)

Manufactures engine and body covers fitted restricting inspection of components

Nearside Front Lower Anti-roll bar linkage ball joint dust cover deteriorated, but preventing the ingress of dirt (2.4.G.2)

Nearside Front tyre damaged on outer sidewall

Offside Front Tyre worn close to the legal limit bald on inner edge. 225/40/18 (4.1.E.1)

Pass 27 May 2017 61,609 miles

Offside Front tyre wearing on inner edge

Pass 25 May 2016 52,440 miles

Nearside Rear Tyre worn close to the legal limit (4.1.E.1)

Offside Rear Tyre worn close to the legal limit (4.1.E.1)

Pass 29 May 2015 41,792 miles
Fail 29 May 2015 41,792 miles

Nearside Front Headlamp aim too low (1.8)

Offside Front Headlamp aim too low (1.8)

Pass 13 Apr 2015 40,995 miles
Fail 13 Apr 2015 40,995 miles

Nearside Front Tyre has ply or cords exposed (4.1.D.1b)

How Reliable is the Mercedes-benz C?

Based on 8,031,355 MOT tests across 683,668 vehicles.

77.6%
Pass Rate
6,412
Miles/Year
32
Year Lifespan
683,668
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 240,078
Suspension arm has excessive play in a ball joint 76,831
Track rod end ball joint has excessive play 67,503
Brake pipe excessively corroded 66,298
coil spring broken 61,560
Full Mercedes-benz C reliability report

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KN12 UNK is a 2012 Mercedes-benz C in Black with a 2,143cc diesel engine. This vehicle has been through 19 MOT tests with a personal pass rate of 63.2%.

Across all 2012 Mercedes-benz C models, the average MOT pass rate is 80.7% with a typical mileage of 71,143 miles. This particular vehicle has a lower pass rate than the average for its year, which may indicate maintenance issues worth investigating.

The most common reason a Mercedes-benz C fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 240,078 recorded failures. If you're considering buying KN12 UNK, it's worth having these areas checked by a mechanic before committing.

The Mercedes-benz C typically stays on UK roads for around 32 years. At 14 years old, this Mercedes-benz C is still in the earlier part of its expected life.

Frequently Asked Questions

How do I check the history of KN12 UNK?

You can check the full history of KN12 UNK by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was KN12 UNK registered?

KN12 UNK is a 2012 Mercedes-benz C, first registered on 16 April 2012.

Is KN12 UNK safe to buy?

The MOT history for KN12 UNK shows 19 tests with a 63.2% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does KN12 UNK 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 KN12 UNK. 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.