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KN09 UMJ

2009 Mercedes-benz B-class

Silver Petrol 1498cc
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MOT Status

Valid
Expires4 Apr 2027
Tests20 (15 pass, 5 fail)
Pass rate75%

Mileage

88,623 mi
Last recorded88,623 miles
Recorded on27 Mar 2026
Typical for 2009 Mercedes-benz B-class63,922 mi

Above average mileage for this year

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

RegistrationKN09 UMJ
MakeMercedes-benz
ModelB-class
Year2009
ColourSilver
Fuel typePetrol
Engine1,498cc

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 27 Mar 2026 88,623 miles

Nearside Front Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

Rear Tyre worn close to legal limit/worn on edge both sides [worn on inner edges] (5.2.3 (e))

Fail 19 Mar 2026 88,619 miles

Fuel cap/sealing device missing (6.1.3 (b) (i))

Nearside Front Side repeater with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii))

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

Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii))

Offside Front Position lamp not working (4.2.1 (a) (ii))

Offside Front Lower Suspension arm ball joint likely to become detached (5.3.4 (a) (ii)) DANGEROUS

Nearside Front Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

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

Pass 25 Mar 2025 83,332 miles

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

Fail 24 Mar 2025 83,332 miles

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

Windscreen washer provides insufficient washer liquid (3.5 (a))

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

Pass 27 Mar 2024 75,449 miles

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

Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))

Pass 31 Mar 2023 64,833 miles

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

Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))

Fail 31 Mar 2023 64,833 miles

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

Offside Front Outer Drive shaft joint constant velocity boot severely deteriorated (6.1.7 (g) (i))

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

Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))

Pass 2 Apr 2022 56,138 miles

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

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

Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))

Fail 2 Apr 2022 56,138 miles

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

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

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

Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))

Pass 9 Mar 2021 44,418 miles
Pass 13 Mar 2020 35,384 miles
Pass 22 Mar 2019 34,218 miles

Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Pass 16 Mar 2018 32,317 miles
Pass 30 Mar 2017 29,445 miles
Pass 16 Mar 2016 23,878 miles

offside rear tyre perished

rear parking (secondary) brake imbalance requirements only just met. It would appear that the braking system requires adjustment or repair. (3.7.B.6b)

Pass 27 Mar 2015 23,188 miles

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

Pass 25 Mar 2014 21,951 miles
Fail 25 Mar 2014 21,951 miles

Nearside Headlamp aim beam image obviously incorrect (1.8.A.1b)

Pass 5 Apr 2013 19,880 miles
Pass 26 Mar 2012 18,133 miles

Windscreen has damage to an area less than a 40mm circle outside zone 'A' (8.3.1d)

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 UMJ is a 2009 Mercedes-benz B-class in Silver with a 1,498cc petrol 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 UMJ, 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 UMJ?

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

What year was KN09 UMJ registered?

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

Is KN09 UMJ safe to buy?

The MOT history for KN09 UMJ 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 UMJ 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 UMJ. 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.