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Model reliability

Mercedes-Benz R-Class reliability

The Mercedes-Benz R-Class fails its MOT less often than most cars over 10 years old: 30.1% of 2,308 tests failed in 2023, against 39.7% on average.

Over 10 years old
30.1% failed their MOT
Better than most
From 2,308 MOT tests of Mercedes-Benz R-Classs this age.
Where it does worse than other cars this age
Fails 50% more oftenTransmission3.9% vs 2.6%
Fails 47% more oftenRigid brake pipes2.5% vs 1.7%Fix about £120
Fails 60% more oftenFront and rear fog lamps1.6% vs 1%Fix about £30
Fails 3× as oftenFlexible brake hoses1.4% vs 0.5%Fix about £120
Advised 2× as oftenFluid leaks22.8% vs 10.1%
Advised 2× as oftenRigid brake pipes17.1% vs 8.3%Fix about £120
Advised 4× as oftenTransmission11.5% vs 2.9%
Advised 36% more oftenShock absorbers6.8% vs 5%Fix about £200
Safety recalls

12 DVSA recalls for the Mercedes-Benz R-Class

Most cover a batch of cars built in a set period, and dealers fix them free. Sweep’s check shows the recalls for a car’s age and whether the DVSA has one outstanding.

R/2022/27930 Sept 2022Built 2005–2013The function of the brake booster might be affected due to advanced corrosion in the joint area of its housing.

The function of the brake booster might be affected due to advanced corrosion in the joint area of its housing.

Fix: Replace brake booster in vehicles that have not passed XENTRY test and require part replacement.

Recalled models: R CLASS · 218 vehicles

R/2022/27830 Sept 2022Built 2005–2013The function of the brake booster might be affected due to advanced corrosion in the joint area of its housing.

The function of the brake booster might be affected due to advanced corrosion in the joint area of its housing.

Fix: Replace brake booster in vehicles that have not passed XENTRY test and require part replacement.

Recalled models: R CLASS · 6,442 vehicles

R/2022/14024 May 2022Built 2005–2013The function of the brake booster might be affected due to advanced corrosion in the joint area of its housing

The function of the brake booster might be affected due to advanced corrosion in the joint area of its housing.

Fix: Check the brake booster on the affected vehicles and - depending on the result of this inspection - replace it where necessary.

Recalled models: R CLASS · 1,631 vehicles

R/2022/13724 May 2022Built 2005–2013The function of the brake booster might be affected due to advanced corrosion in the joint area of its housing

The function of the brake booster might be affected due to advanced corrosion in the joint area of its housing.

Fix: Check the brake booster on the affected vehicles and - depending on the result of this inspection - replace it where necessary.

Recalled models: R CLASS · 31,666 vehicles

R/2021/27717 Aug 2021Built 2004–2013The driver's air bag may have a chemical change to its propellant over time

The driver's airbag may have a chemical change to its propellant over time.

Fix: Replace the driver�s airbag.

Recalled models: R CLASS · 108,486 vehicles

R/2021/27917 Aug 2021Built 2004–2013The driver's air bag may have a chemical change to its propellant over time

The driver's airbag may have a chemical change to its propellant over time.

Fix: Replace the driver�s airbag

Recalled models: R CLASS · 61 vehicles

R/2011/17226 Jan 2012Built 2009–2011Fuel may leak

Fuel leaks in the plug area of the drain opening may occur at the fuel filter with integrated fuel heaters. Fuel can escape and is noticeable to the customer due to a corresponding diesel odour. The diesel can reach the road and as a result friction between the tyres and road surface may be decreased.

Fix: Check filter and replace as necessary.

Recalled models: R CLASS · 22,298 vehicles

R/2010/2057 Jan 2011Fuel may leak

Fuel may leak from the fuel filter housing onto the road surface and thereby make the road slippery for road users.

Fix: Recall the vehicles that are likely to be affected to replace the fuel filter housing if it is leaking.

Recalled models: R CLASS · 2,972 vehicles

R/2008/14917 Nov 2008Built 2006–2007Engine could lose power.

The electrical connection in the interior of the crankshaft sensor's chip housing may be interrupted which may result in loss of power and the inability to restart engine

Fix: Recall affected vehicles and replace crankshaft sensor

Recalled models: R CLASS · 19,331 vehicles

R/2008/14710 Nov 2008Built 2004–2008Engine emergency shut off on board diagnosis or tank/speedo signal may be affected

Possibility of transfer of incorrect control unit software which could affect engine shut off control in an emergency situation or the on board diagnosis system or tank/speedometer signal

Fix: Recall affected vehicles and replace SAM control unit

Recalled models: R CLASS · 72 vehicles

R/2006/1481 Sept 2006Risk of electrical short circuit

The routing of the stater motor wiring harness may be incorrect with the attendant risk of a short circuit occurring.

Fix: Recall vehicles and check the routing of the subject wiring harness taking corrective action as necessary.

Recalled models: R CLASS · 50 vehicles

R/2006/1521 Sept 2006Seat belt may de-latch

Excessive side movement within the driver's seat belt buckle may cause the seat belt to de-latch.

Fix: Recalled vehicles will have the subject seat belt buckle checked for excessive side movement. The buckle will be replaced if excessive movement is evident.

Recalled models: R CLASS · 67 vehicles

DVSA vehicle safety recalls (Crown copyright, Open Government Licence).

Checking a Mercedes-Benz R-Class before you buy

Look at the parts above at the viewing, and read the car’s own MOT history: advisories for the same parts suggest the problem is already starting. Sweep’s free check shows every MOT, advisory and mileage reading for a registration.

Source: DVSA anonymised MOT tests 2023 (Open Government Licence v3.0). Failure rates compare this model with all cars in the same age band. Fix prices are typical independent-garage estimates.
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