Plastic guide rails hold the timing chain in place.
Applies to the engine B48B16M0, B48B20.
Repair: 700–2,900 EUR
2017–2023. The fault list covers this generation and the engines in it. If the listing gives the exact version, pick it below.

Vauxford / CC BY-SA 4.0
What to watch for
The list covers the generation, the engines and the transmissions. Once you pick the version, only the faults that apply to it stay.
Plastic guide rails hold the timing chain in place.
Applies to the engine B48B16M0, B48B20.
Repair: 700–2,900 EUR
On this engine the injectors were also listed as parts to be replaced in the maker's own programme, which means their failure is a known one.
Applies to the engine N63B44.
The high pressure pump of these common rail diesels (Bosch CP4) can fail while driving.
Applies to the engine B47D20.
The timing chain stretches between 80,000 and 120,000 km, and the plastic chain guides break.
Applies to the engine N63B44.
In these engines the water pump is not belt driven but has its own electric motor.
Applies to the engine B48B20, B58B30.
The internal fins of the exhaust gas recirculation cooler crack over time, and glycol coolant leaks into the intake, where it mixes with soot.
Applies to the engine B47D20, B57D30O0, B57D30O2 and 5 more.
On the early model years the timing chain of the B47 stretches faster than intended.
Applies to the engine B47D20.
Repair: 1,200–4,500 EUR
The B47 replaced the N47, and the maker fixed the timing chain problem.
Applies to the engine B47D20, B57D30O0, B57D30O2 and 5 more.
6 more faults belong to this generation. On the version page, only the ones that apply stay.
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.
Most recent: 31 August 2026
SR/02525/26Safety recallFire31 August 2026 · EU Safety GateWater may enter the starter motor and cause damage. As a result, the engine may no longer start, or the starter motor may short-circuit or remain continuously activated. This could cause local overheating of the starter motor or thermal overload of surrounding components and lead to a vehicle fire, including when the ignition is switched off. 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: 31/08/2026
SR/02180/26Safety recallFire7 July 2026 · EU Safety GateThe RSW22 starter with reinforced water tightness (RWT) may experience increased abrasion of the magnetic contact, causing deposits to build up at the lowest point inside the relay. These deposits may increase relay contact resistance, leading to starting failures or short circuits. If a short circuit occurs, either when attempting to start the vehicle or while driving due to vibration-related movement of the deposits, it could cause a thermal event and increase the risk of 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: 07/07/2026
SR/00551/26Safety recallFire30 January 2026 · EU Safety GateThe failure concerns the RSW22 starter, type RWT (reinforced for watertightness). Increased abrasion of the magnetic contact can lead to the formation of deposits at the lowest point of the relay interior. This in turn can increase the resistance of the relay contact, causing accidental ignition or even short circuits, possibly leading to a thermal reaction and 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: 30/01/2026
SR/00568/26Safety recallFire30 January 2026 · EU Safety GateThe failure concerns the RSW22 starter, type RWT (reinforced for watertightness). Increased abrasion of the magnetic contact can lead to the formation of deposits at the lowest point of the relay interior. This in turn can increase the resistance of the relay contact, causing accidental ignition or even short circuits, possibly leading to a thermal reaction and 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: 30/01/2026
SR/00584/26Safety recallFire30 January 2026 · EU Safety GateThe failure concerns the RSW22 starter, type RWT (reinforced for watertightness). Increased abrasion of the magnetic contact can lead to the formation of deposits at the lowest point of the relay interior. This in turn can increase the resistance of the relay contact, causing accidental ignition or even short circuits, possibly leading to a thermal reaction and 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: 30/01/2026
A12/01930/23Safety recallInjuries29 June 2021 · EU Safety GateThe propellant in the driver airbag can deteriorate due to high humidity and temperature variations. In the event of an accident in which the airbag deploys, this could result in fragments from the inflator casing coming loose and injuring the vehicle’s occupants. 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: 29/06/2021
A12/1233/17Safety recallInjuries30 August 2017 · EU Safety GateThe front safety belts may have a faulty locking mechanism.
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: 30/08/2017
A12/0882/17Safety recallInjuries12 June 2017 · EU Safety GateOwing to a defect in the ball head of the brake pedal, the brake lights may be permanently activated, even during driving, without any error warning being shown. This might have an impact on road users following the vehicle.
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: 12/06/2017
A12/00068/19Safety recallInjuriesno date · EU Safety GateThe press-in force of the counterbalance shaft’s bearing shells may not have met the specifications, which could cause the counterbalance shaft to become loose. As a result, the engine could be damaged and locked in motion, increasing the risk of an 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
A12/00184/24Safety recallInjuriesno date · EU Safety GateDue to a manufacturing error, the weld seam of the integrated transmission control unit (ITCU) may not have been correctly executed. As a result, transmission oil could leak into the ITCU, causing it to fail. This may lead to transmission seizure, 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
A12/00441/24Safety recallFireno date · EU Safety GateA defect on the cylinder head cover could allow oil to leak and spread through the engine compartment, creating a risk of 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
A12/00609/21Safety recallInjuriesno date · EU Safety GateThe ignition unit of the head airbag may separate from the inflator and enter the vehicle's interior when the airbag is deployed. As a result, the inflation of the head airbag may be reduced or non-existent, increasing the risk of injury in the event of an 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
A12/00996/24Safety recallInjuriesno date · EU Safety GateThe integrated braking system could be compromised, which could lead to an unexpected failure of the hydraulic braking assistance, thereby requiring greater pressure on the brake pedal. This can result in a longer braking distance, as well as failure of the Anti-lock Braking System (ABS) and the Dynamic Stability Control (DSC), 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
A12/01342/20Safety recallFireno date · EU Safety GateA short circuit in the high-voltage battery could occur during initial charging due to a particle in the form of a welding bead. This may trigger a chain reaction in the battery, 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
A12/01377/22Safety recallFireno date · EU Safety GateDefects in the winding of cell-internal foils in the high-voltage batteries can lead to the occurrence of increased self-discharge. This can cause high voltage cell modules to overheat, increasing the risk of 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
A12/01717/22Safety recallInjuriesno date · EU Safety GateDue to improper installation of the seat belts, the restraint function may be impaired, 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
A12/01785/21Safety recallInjuriesno date · EU Safety GateThe screws which were used to assemble seatbelts and also on the rear seats of the vehicles concerned may not have been manufactured in accordance with specifications. In some cases, the screws in question cannot withstand extreme loads, which could increase the risk of injury in the event of an accident. 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
A12/02573/24Safety recallInjuriesno date · EU Safety GateThe propellant in the driver airbag may deteriorate over time. If the airbags deploy, it could result in fragments from the inflator injuring the vehicle's occupants. 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
A12/02833/24Safety recallInjuriesno date · EU Safety GateThe propellant in the driver airbag may deteriorate over time. If the airbags deploy, it could result in fragments from the inflator injuring the vehicle's occupants. 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
A12/1346/17Safety recallInjuriesno date · EU Safety GateA component of the steering mechanism might not have been fitted correctly. This might lead to considerably increased steering force being required or to a loss of steering control.
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
SR/00898/26Safety recallFireno date · EU Safety GateThe cockpit cable harness may be damaged when the microfilter is replaced. This can lead to a short circuit, with smoke build-up resulting in 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
SR/01734/25Safety recallFireno date · EU Safety GateThe positive battery cable of the starter-generator may not have been manufactured correctly. This could result in a loose electrical connection, leading to excessive contact resistance. The vehicle cannot charge or start. Contact points in the starter-generator could overheat and cause a vehicle 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
SR/03830/25Safety recallFireno date · EU Safety GateWater may come into contact with the starter relay and gradually cause corrosion. This could affect the electrical connection inside the relay and make the engine difficult to start. It may also result in a short circuit and could cause the starter to overheat leading to a fire when the vehicle is in motion or when it is parked with the ignition off. 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
G30 · 2017–2023
The fault list opens on the version page.
80 versions
2.0 l · 1995 cm³
B47D20 · ZF8HP
518d
2017–2020 · 518d
2.0 l · 1995 cm³
B47D20 · ZF8HP
518d Business Edition Plus
2020–2023 · 518d Business Edition Plus
2.0 l · 1995 cm³
B47D20 · ZF8HP
518d Corporate Executive
2017–2020 · 518d Corporate Executive
2.0 l · 1995 cm³
B47D20 · ZF8HP
518d Touring
2017–2020 · 518d Touring
2.0 l · 1995 cm³
B47D20 · ZF8HP
518d Touring Business Edition Plus
2020–2024 · 518d Touring Business Edition Plus
2.0 l · 1995 cm³
B47D20 · ZF8HP
518d Touring Corporate Executive
2017–2020 · 518d Touring Corporate Executive
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d
2017–2020 · 520d
2.0 l · 1995 cm³
B47D20 · GS6
520d
2017–2020 · 520d
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d Business Edition Plus
2020–2023 · 520d Business Edition Plus
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d Corporate Executive
2017–2020 · 520d Corporate Executive
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d EfficientDynamics Edition
2017–2020 · 520d EfficientDynamics Edition
2.0 l · 1995 cm³
B47D20 · GS6
520d Touring
2017–2020 · 520d Touring
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d Touring
2017–2020 · 520d Touring
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d Touring Business Edition Plus
2020–2024 · 520d Touring Business Edition Plus
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d Touring Corporate Executive
2017–2020 · 520d Touring Corporate Executive
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d xDrive
2017–2020 · 520d xDrive
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d xDrive Business Edition Plus
2020–2023 · 520d xDrive Business Edition Plus
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d xDrive Touring
2017–2020 · 520d xDrive Touring
2.0 l · 1995 cm³
B47D20 · ZF8HP
520d xDrive Touring Business Edition Plus
2020–2024 · 520d xDrive Touring Business Edition Plus
2.0 l · 1995 cm³
B47D20 · ZF8HP
525d
2017–2020 · 525d
2.0 l · 1995 cm³
B47D20 · ZF8HP
525d Touring
2017–2020 · 525d Touring
2.0 l · 1998 cm³
B47D20 · ZF8HP
520e
2020–2023 · 520e
2.0 l · 1998 cm³
B47D20 · ZF8HP
520e Business Edition Plus
2020–2023 · 520e Business Edition Plus
2.0 l · 1998 cm³
B47D20 · ZF8HP
520e Touring
2020–2024 · 520e Touring
2.0 l · 1998 cm³
B47D20 · ZF8HP
520e Touring Business Edition Plus
2020–2024 · 520e Touring Business Edition Plus
2.0 l · 1998 cm³
B48B20 · ZF8HP
520i
2017–2020 · 520i
2.0 l · 1998 cm³
B48B20 · ZF8HP
520i Business Edition Plus
2020–2023 · 520i Business Edition Plus
2.0 l · 1998 cm³
B48B20 · ZF8HP
520i Corporate Executive
2017–2020 · 520i Corporate Executive
2.0 l · 1998 cm³
B48B20 · ZF8HP
520i Touring
2017–2020 · 520i Touring
2.0 l · 1998 cm³
B48B20 · ZF8HP
520i Touring Business Edition Plus
2020–2024 · 520i Touring Business Edition Plus
2.0 l · 1998 cm³
B48B20 · ZF8HP
520i Touring Corporate Executive
2017–2020 · 520i Touring Corporate Executive
2.0 l · 1998 cm³
B47D20 · B48B20 · ZF8HP
530e
2017–2020 · 530e
2.0 l · 1998 cm³
B47D20 · B48B20 · ZF8HP
530e Business Edition Plus
2020–2023 · 530e Business Edition Plus
2.0 l · 1998 cm³
B47D20 · B48B20 · ZF8HP
530e Touring
2020–2024 · 530e Touring
2.0 l · 1998 cm³
B47D20 · B48B20 · ZF8HP
530e Touring Business Edition Plus
2020–2024 · 530e Touring Business Edition Plus
2.0 l · 1998 cm³
B47D20 · B48B20 · ZF8HP
530e xDrive
2017–2020 · 530e xDrive
2.0 l · 1998 cm³
B47D20 · B48B20 · ZF8HP
530e xDrive Business Edition Plus
2020–2023 · 530e xDrive Business Edition Plus
2.0 l · 1998 cm³
B47D20 · B48B20 · ZF8HP
530e xDrive Touring
2020–2024 · 530e xDrive Touring
2.0 l · 1998 cm³
B47D20 · B48B20 · ZF8HP
530e xDrive Touring Business Edition Plus
2020–2024 · 530e xDrive Touring Business Edition Plus
2.0 l · 1998 cm³
B48B20 · ZF8HP
530i
2017–2020 · 530i
2.0 l · 1998 cm³
B48B20 · ZF8HP
530i Business Edition Plus
2020–2023 · 530i Business Edition Plus
2.0 l · 1998 cm³
B48B20 · ZF8HP
530i Touring
2017–2020 · 530i Touring
2.0 l · 1998 cm³
B48B20 · ZF8HP
530i Touring Business Edition Plus
2020–2024 · 530i Touring Business Edition Plus
2.0 l · 1998 cm³
B48B20 · ZF8HP
530i xDrive
2017–2020 · 530i xDrive
2.0 l · 1998 cm³
B48B20 · ZF8HP
530i xDrive Business Edition Plus
2020–2023 · 530i xDrive Business Edition Plus
2.0 l · 1998 cm³
B48B20 · ZF8HP
530i xDrive Touring
2017–2020 · 530i xDrive Touring
2.0 l · 1998 cm³
B48B20 · ZF8HP
530i xDrive Touring Business Edition Plus
2020–2024 · 530i xDrive Touring Business Edition Plus
3.0 l · 2993 cm³
B57D30M0 · B57D30O0 · ZF8HP70
530d
2017–2020 · 530d
3.0 l · 2993 cm³
B57D30M0 · B57D30O0 · ZF8HP70
530d Touring
2017–2020 · 530d Touring
3.0 l · 2993 cm³
B57D30M0 · B57D30O0 · ZF8HP70
530d xDrive
2017–2020 · 530d xDrive
3.0 l · 2993 cm³
B57D30M0 · B57D30O0 · ZF8HP70
530d xDrive Touring
2017–2020 · 530d xDrive Touring
3.0 l · 2993 cm³
B57D30M0 · B57D30O2 · ZF8HP70
530d
2020–2023 · 530d
3.0 l · 2993 cm³
B57D30M0 · B57D30O2 · ZF8HP70
530d Business Edition Plus
2020–2023 · 530d Business Edition Plus
3.0 l · 2993 cm³
B57D30M0 · B57D30O2 · ZF8HP70
530d Touring
2020–2024 · 530d Touring
3.0 l · 2993 cm³
B57D30M0 · B57D30O2 · ZF8HP70
530d Touring Business Edition Plus
2020–2024 · 530d Touring Business Edition Plus
3.0 l · 2993 cm³
B57D30M0 · B57D30O2 · ZF8HP70
530d xDrive
2020–2023 · 530d xDrive
3.0 l · 2993 cm³
B57D30M0 · B57D30O2 · ZF8HP70
530d xDrive Business Edition Plus
2020–2023 · 530d xDrive Business Edition Plus
3.0 l · 2993 cm³
B57D30M0 · B57D30O2 · ZF8HP70
530d xDrive Touring
2020–2024 · 530d xDrive Touring
3.0 l · 2993 cm³
B57D30M0 · B57D30O2 · ZF8HP70
530d xDrive Touring Business Edition Plus
2020–2024 · 530d xDrive Touring Business Edition Plus
3.0 l · 2993 cm³
B57D30 · B57D30T0 · ZF8HP70
540d xDrive
2017–2020 · 540d xDrive
Neighbouring generations
G30/G31 (2017-2023). If the listing is from the changeover year, look at the neighbour too.
Common questions
2017–2023. The changeover year can fall in two generations. If the listing is from that year, look at the neighbour too.
No. It depends on the engine and the transmission too.
The fault list is.
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.