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KN09 UOJ

2009 Mercedes-benz B-class

Grey Diesel 1991cc
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MOT Status

Valid
Expires4 Nov 2026
Tests20 (15 pass, 5 fail)
Pass rate75%

Mileage

140,902 mi
Last recorded140,902 miles
Recorded on29 Oct 2025
Typical for 2009 Mercedes-benz B-class63,922 mi

Significantly above average — investigate

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

RegistrationKN09 UOJ
MakeMercedes-benz
ModelB-class
Year2009
ColourGrey
Fuel typeDiesel
Engine1,991cc

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

15 pass 5 fail
Pass 29 Oct 2025 140,902 miles

Front Tyre worn close to legal limit/worn on edge both front tire slight edges wear inner side edge (5.2.3 (e))

Rear Coil spring corroded both rear coil springs heavily corroded (5.3.1 (b) (i))

fuel tank pipe corroded

underside of vehicle corroded

Pass 5 Nov 2024 132,309 miles

Fuel Pipe/s corroded ()

Rear Coil spring corroded both sides (5.3.1 (b) (i))

under side of vehicle corrosion

Pass 25 Oct 2023 125,123 miles

rear shock absorbers starting to weep

Fail 24 Oct 2023 125,121 miles

Brake pipe excessively corroded front to rear (1.1.11 (c))

Rear Brake pipe leaking on a hydraulic braking system (1.1.11 (b) (ii)) DANGEROUS

rear shock absorbers starting to weep

Pass 24 Oct 2022 116,952 miles

Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Rear Coil spring corroded both (5.3.1 (b) (i))

fuel tank filler neck pipes corroding

glow plug light staying on

slight play to steering system

Pass 12 Oct 2021 108,504 miles

Front Brakes imbalanced requirements only just met. It would appear that the braking system requires adjustment or repair. (1.2.1 (b) (i))

fuel tank filler pipes corroding and signs of misting

Fail 12 Oct 2021 108,504 miles

Front Windscreen wiper does not clear the windscreen effectively both (3.4 (b) (ii))

Nearside Side repeater light intensity significantly reduced (4.4.3 (a))

Front Brakes imbalanced requirements only just met. It would appear that the braking system requires adjustment or repair. (1.2.1 (b) (i))

Offside Rear Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

fuel tank filler pipes corroding and signs of misting

Pass 5 Nov 2020 100,847 miles
Fail 5 Nov 2020 100,845 miles

Offside Rear Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (5.2.3 (d) (i))

Parking brake efficiency below requirements (1.4.2 (a) (i))

Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c))

Pass 23 Oct 2019 95,161 miles

Nearside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

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

Offside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Fail 23 Oct 2019 95,161 miles

Nearside Front Lower Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))

Rear Registration plate does not conform to the specified requirements Deteriorated through lettering (0.1 (d))

Nearside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

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

Offside Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Pass 30 Oct 2018 85,820 miles

Nearside Front Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Front Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Play in steering rack inner joint(s) ()

fuel filler/breather pipe by tank heavily corroded

Fail 26 Oct 2018 85,724 miles

Nearside Headlamp light intensity severely reduced (4.1.4 (a))

Nearside Rear Brake pipe excessively corroded (1.1.11 (c))

Nearside Front Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Front Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Play in steering rack inner joint(s) ()

fuel filler/breather pipe by tank heavily corroded

Pass 1 Nov 2017 76,311 miles

Rear registration plate deteriorated but not likely to be misread (6.3.1d)

Pass 28 Oct 2016 67,654 miles

Brake pipe slightly corroded All rear brake pipes (3.6.B.2c)

Nearside Front Tyre worn close to the legal limit 3mm (4.1.E.1)

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

Offside Front Tyre worn close to the legal limit 3mm (4.1.E.1)

Pass 30 Oct 2015 57,278 miles

Under trays fitted

Pass 4 Nov 2014 48,858 miles

o/s/f tyre worn inner edge

Pass 2 Apr 2014 44,517 miles
Pass 3 Apr 2013 37,720 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 26 Mar 2012 29,122 miles

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

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

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

Rear wiper blade split

How Reliable is the Mercedes-benz B-class?

Based on 984,871 MOT tests across 77,700 vehicles.

79.4%
Pass Rate
5,590
Miles/Year
21
Year Lifespan
77,700
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 6,159
coil spring broken 5,250
Full Mercedes-benz B-class reliability report

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KN09 UOJ is a 2009 Mercedes-benz B-class in Grey with a 1,991cc diesel engine. This vehicle has been through 20 MOT tests with a personal pass rate of 75%.

Across all 2009 Mercedes-benz B-class models, the average MOT pass rate is 76.4% with a typical mileage of 63,922 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 B-class fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 6,159 recorded failures. If you're considering buying KN09 UOJ, it's worth having these areas checked by a mechanic before committing.

The Mercedes-benz B-class typically stays on UK roads for around 21 years. At 17 years old, this Mercedes-benz B-class is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of KN09 UOJ?

You can check the full history of KN09 UOJ by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was KN09 UOJ registered?

KN09 UOJ is a 2009 Mercedes-benz B-class, first registered on 31 March 2009.

Is KN09 UOJ safe to buy?

The MOT history for KN09 UOJ shows 20 tests with a 75% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does KN09 UOJ 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 KN09 UOJ. 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.