vinkodex.

Mercedes-Benz B-Class W247 common faults.

2019–. The fault list covers this generation and the engines in it. If the listing gives the exact version, pick it below.

Mercedes-Benz B-Class W247

© M 93 / CC BY-SA 3.0 de

What to watch for

What can go wrong on this car?

The list covers the generation, the engines and the transmissions. Once you pick the version, only the faults that apply to it stay.

critical2

On the M282 1.3 litre turbo petrol engine built in cooperation with Renault (A/B/CLA/GLA/GLB), a recall supervised by the German federal motor transport authority states that the turbo oil feed line could leak on cars built between 17 August 2019 and 6 July 2020.

Applies to the engine M282DE14AL.

expensive3

The 7 speed dual clutch of the transverse MFA platform (7G-DCT / 724.0: A/B/CLA/GLA/GLB) started its early years with jerking and firmware faults; today most of the complaints trace back to the mechatronics unit (valve body and solenoids) and the electric oil pump.

Applies to the transmission MB7DCT.

Official recall11 recallsShow

The manufacturer fixes these for free at a franchised dealer. Ask with the VIN whether it was done. The list covers the whole generation. We did not filter it by model year. Some apply only to a narrower production window.

A12/00017/22Safety recallFireno date · EU Safety Gate

A trapped particle may damage the sealing between the fuel rail and fuel injector, which could cause fuel to leak into the engine compartment. Consequently, leaking fuel may come into contact with hot parts of the engine, increasing the risk of fire. The product does not comply with the requirements laid down in the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/00069/19Safety recallInjuriesno date · EU Safety Gate

The four self-locking nuts used to attach the airbag might not have been correctly tightened. As a result, in the event of an accident in which the airbag was deployed, it could become detached from its base plate, failing to provide its restraining effect and increasing the risk of injuries.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/00506/22Safety recallInjuriesno date · EU Safety Gate

Improper wiring harness of the left rear side airbag can damage the airbag when weight is placed on the rear seat cushion. As a result, this airbag may not deploy, increasing the risk of injury in the event of an accident. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/00531/22Safety recallInjuriesno date · EU Safety Gate

Improper torque of the screws on the brake caliper housing can cause the screw connections to become loose. As a result, the braking performance would be reduced and components of the brake caliper may be lost, increasing the risk of accidents. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/00940/24Safety recallInjuriesno date · EU Safety Gate

The steering software may not correctly activate the fallback level in the event of a hardware failure. This could affect the power steering assistance and lead to the loss of steering capacity, increasing the risk of an accident. The product does not comply with the Regulation on the approval and market surveillance of Motor Vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Update of the electric steering software Date of entry into force: Unknown Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/01337/20Safety recallFireno date · EU Safety Gate

The oil-supply pipe on the turbocharger may leak. As a result, engine oil could leak onto the under-body paneling and from there onto the road, posing a risk to the following traffic. Moreover, leaking engine oil might come into contact with hot components in the engine compartment, increasing the risk of fire.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/01523/21Safety recallFireno date · EU Safety Gate

The corrosion protection on the high voltage battery housing cannot be guaranteed to last for the whole lifetime of the vehicle. After the vehicle has been in use for a longer period of time, the high voltage battery housing could therefore corrode under certain specific environmental conditions. In this case, the sealing effect of the battery housing could then gradually be compromised, allowing moisture to penetrate the battery. This could lead to insulation failure, resulting in it being impossible to restart the vehicle once the engine has been switched off. Furthermore, this could increase the risk of fire. The product does not comply with the requirements laid down in the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

A12/02969/24Safety recallInjuriesno date · EU Safety Gate

The pyrofuse casing may move while the vehicle is in motion, potentially damaging cables. As a result, the pyrofuse could fail during an accident or cause the separator piston to dislodge into the driver’s footwell, increasing the risk of injury. Additionally, in plug-in hybrid and electric vehicles, cable damage could lead to high-voltage system failure and loss of power without warning, increasing the risk of an accident. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

INFO/00101/21Safety recallInjuriesno date · EU Safety Gate

The air-conditioning system's condensed-water drainage hose may be blocked, which may cause water to enter into the vehicle's interior. Consequently, any electrical components installed there could be corroded and/or subjected to short circuits or leakage currents. As a result, the Supplemental Restraint System (SRS) control unit could stop working, the vehicle may fail to start, the engine emergency run could be activated while the vehicle is in motion, and the functioning of other components (e.g. the fuel pump, automatic/manual emergency call) could be adversely affected. This would increase the risk of injury and accident.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

SR/00883/25Safety recallFireno date · EU Safety Gate

A gasket is lacking between the exhaust manifold and the exhaust gas turbocharger. This can lead to hot, unpurified exhaust gas seeping out between the turbocharger and the manifold. This can damage the cylinder head cover and cause an oil leak. If the oil come into contact with hot engine parts, the vehicle can catch fire. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

SR/03986/25Safety recallInjuriesno date · EU Safety Gate

A washer for the front safety belts may not correspond to specifications and could not withstand the loads. In the event of an accident, the restraining effect could be incomplete, increasing the risk of injuries. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

The authority's notice

Engines and transmissions in this generation

A fault is often tied to the engine, not to the whole generation. You find the engine code in the registration document.

W247 · 2019–

Pick the version.

The fault list opens on the version page.

71 versions

Showing 60 of 71 versions.

Neighbouring generations

W247 · 2019–

W247 (2019-). If the listing is from the changeover year, look at the neighbour too.

Previous generation

W246 · 2011–2018

This generation

W247 · 2019–

Next generation

This is the latest.

Common questions

About this generation

Which years does this page cover?

2019–. The changeover year can fall in two generations. If the listing is from that year, look at the neighbour too.

Does the fault apply to every car like this?

No. It depends on the engine and the transmission too.

Is it free?

The fault list is.

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms