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KW09 BYZ

2009 Mercedes-benz B-class

Blue Petrol 1498cc
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MOT Status

Valid
Expires5 Jan 2027
Tests18 (14 pass, 4 fail)
Pass rate77.8%

Mileage

136,861 mi
Last recorded136,861 miles
Recorded on6 Jan 2026
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

RegistrationKW09 BYZ
MakeMercedes-benz
ModelB-class
Year2009
ColourBlue
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

14 pass 4 fail
Pass 6 Jan 2026 136,861 miles
Pass 25 Jun 2025 133,941 miles
Pass 31 Jul 2024 132,187 miles
Pass 11 Jul 2023 127,612 miles

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

Fail 10 Jul 2023 127,612 miles

Offside Front Lower Suspension arm ball joint excessively worn (5.3.4 (a) (i))

Offside Side repeater not working (4.4.1 (a) (ii))

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

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

Rear Direction indicator slightly discoloured both side (4.4.3 (a))

Pass 11 Jul 2022 121,791 miles

Items removed from driver's view prior to test ()

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

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

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

Offside Front Side repeater slightly discoloured (4.4.3 (a))

Rear Direction indicator slightly discoloured both (4.4.3 (a))

Rear slight handbrake travel

Pass 1 Jul 2021 116,565 miles

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

Exhaust has a minor leak of exhaust gases (6.1.2 (a))

Offside Front Side repeater slightly discoloured door mirror (4.4.3 (a))

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

Rear Direction indicator slightly discoloured (4.4.3 (a))

Rear slight handbrake travel

Pass 16 Jul 2020 113,488 miles
Fail 13 Jul 2020 113,489 miles

Nearside Front Shock absorbers has a serious fluid leak (5.3.2 (b))

Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))

Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))

Pass 1 May 2019 107,593 miles

Nearside Front Shock absorbers light misting of oil or has limited damping effect (5.3.2 (b))

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

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

Fail 1 May 2019 107,593 miles

Nearside Front Shock absorbers light misting of oil or has limited damping effect (5.3.2 (b))

Nearside Headlamp not working on dipped beam (4.1.1 (a) (ii))

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

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

Pass 17 Jul 2017 94,964 miles
Pass 10 Jun 2016 86,351 miles

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

Fail 10 Jun 2016 86,351 miles

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

Nearside Headlamp not working on dipped beam (1.7.5a)

Pass 23 Apr 2015 75,513 miles
Pass 17 Jul 2014 69,653 miles
Pass 15 Jul 2013 60,160 miles

Engine covers fitted obscuring some components in the engine bay

Under-trays fitted obscuring some underside components

Pass 25 Jul 2012 47,934 miles

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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KW09 BYZ is a 2009 Mercedes-benz B-class in Blue with a 1,498cc petrol engine. This vehicle has been through 18 MOT tests with a personal pass rate of 77.8%.

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 performed better than the average for its year.

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 KW09 BYZ, 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 KW09 BYZ?

You can check the full history of KW09 BYZ by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was KW09 BYZ registered?

KW09 BYZ is a 2009 Mercedes-benz B-class, first registered on 30 July 2009.

Is KW09 BYZ safe to buy?

The MOT history for KW09 BYZ shows 18 tests with a 77.8% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does KW09 BYZ 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 KW09 BYZ. 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.