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K121 WGB

2009 Mercedes-benz R-class

Black Diesel 2987cc
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MOT Status

Valid
Expires10 Mar 2027
Tests17 (13 pass, 4 fail)
Pass rate76.5%

Mileage

99,183 mi
Last recorded99,183 miles
Recorded on11 Mar 2026
Typical for 2009 Mercedes-benz R-class84,782 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

RegistrationK121 WGB
MakeMercedes-benz
ModelR-class
Year2009
ColourBlack
Fuel typeDiesel
Engine2,987cc

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

13 pass 4 fail
Pass 11 Mar 2026 99,183 miles

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

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

Fail 11 Mar 2026 99,183 miles

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

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

Registration plate lamp does not illuminate simultaneously with the position lamps (4.7.2 (a))

Pass 2 May 2024 95,897 miles

Front Suspension arm pin or bush worn but not resulting in excessive movement n/s & o/s track control bushes (5.3.4 (a) (i))

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

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

Rear Child Seat fitted not allowing full inspection of adult belt n/s & o/s rear most ()

Fail 6 Apr 2024 95,885 miles

Oil leaking continuously from engine posing a serious risk to road safety (8.4.1 (a) (ii)) DANGEROUS

Front Suspension arm pin or bush worn but not resulting in excessive movement n/s & o/s track control bushes (5.3.4 (a) (i))

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

Rear Child Seat fitted not allowing full inspection of adult belt n/s & o/s rear most ()

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

Pass 12 Apr 2023 88,614 miles

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

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

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

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

Pass 8 Apr 2022 80,015 miles
Pass 12 Apr 2021 68,204 miles

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

Pass 2 Jul 2019 62,426 miles

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

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

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

Offside Front 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))

Windscreen wiper blade defective (3.4 (b) (i))

Pass 30 Jun 2018 53,778 miles
Pass 27 Jun 2017 45,458 miles
Pass 21 Sep 2016 43,232 miles

Nearside Rear Shock absorber has a light misting of oil (2.7.3)

Oil leak Engine ()

Rear Brake pad(s) wearing thin (3.5.1g)

Fail 16 Sep 2016 43,232 miles

Headlamp cleaning device inoperative (1.7.2)

Offside Headlamp aim too low (1.8)

Nearside Rear Air suspension bellows leaking (2.4.D.2) DANGEROUS

Nearside Rear Air suspension unit totally deflated (2.4.D.1a) DANGEROUS

Nearside Rear Shock absorber has a light misting of oil (2.7.3)

Oil leak Engine ()

Rear Brake pad(s) wearing thin (3.5.1g)

Pass 22 Sep 2015 36,697 miles

Nearside Brake pipe slightly corroded front to rear (3.6.B.2c)

Offside Brake pipe slightly corroded front to rear (3.6.B.2c)

child seat fitted preventing full inspection of a seat belt

Fail 14 Sep 2015 36,539 miles

Offside Front Obligatory mirror insecure (8.1.1)

Nearside Brake pipe slightly corroded front to rear (3.6.B.2c)

Offside Brake pipe slightly corroded front to rear (3.6.B.2c)

child seat fitted preventing full inspection of a seat belt

Pass 12 Sep 2014 29,111 miles
Pass 13 Sep 2013 22,730 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 Sep 2012 17,316 miles

How Reliable is the Mercedes-benz R-class?

Based on 63,579 MOT tests across 4,470 vehicles.

78.4%
Pass Rate
7,608
Miles/Year
20
Year Lifespan
4,470
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 919
position lamp(s) not working 728
Shock absorber has a serious fluid leak 598
Parking brake: efficiency below requirements 581
Tyre has a cut in excess of the requirements deep enough to reach the ply or cords 407
Full Mercedes-benz R-class reliability report

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K121 WGB is a 2009 Mercedes-benz R-class in Black with a 2,987cc diesel engine. This vehicle has been through 17 MOT tests with a personal pass rate of 76.5%.

Across all 2009 Mercedes-benz R-class models, the average MOT pass rate is 77.7% with a typical mileage of 84,782 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 R-class fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 919 recorded failures. If you're considering buying K121 WGB, it's worth having these areas checked by a mechanic before committing.

The Mercedes-benz R-class typically stays on UK roads for around 20 years. At 17 years old, this Mercedes-benz R-class is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of K121 WGB?

You can check the full history of K121 WGB by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was K121 WGB registered?

K121 WGB is a 2009 Mercedes-benz R-class, first registered on 22 September 2009.

Is K121 WGB safe to buy?

The MOT history for K121 WGB shows 17 tests with a 76.5% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does K121 WGB 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 K121 WGB. 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.