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.
2018–. The fault list covers this generation and the engines in it. If the listing gives the exact version, pick it below.

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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.
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 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 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 B57D30T2, B57D30, B57D30T0.
The B47 replaced the N47, and the maker fixed the timing chain problem.
Applies to the engine B57D30T2, B57D30, B57D30T0.
A rubber gasket seals the oil filter housing to the block.
Applies to the engine B58B30.
The crankcase ventilation leads the gas that forms in the crankcase back to the intake and separates the oil out of it on the way.
Applies to the engine B58B30.
Repair: 80–900 EUR
The valve stem seals start to lose their sealing from 90,000 km, and oil gets into the combustion chamber along the valve stem.
Applies to the engine N63B44.
3 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.
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
A12/00590/21Safety recallInjuriesno date · EU Safety GateDefective hydraulic unit of the braking system may cause a limited braking support and increased braking distance. Moreover, in such cases the ABS system would not be available. This will lead to increased 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
A12/00636/20Safety recallInjuriesno date · EU Safety GateThe cable connecting the hall sensor with the seat buckle might be too short. Consequently, the sensor might detach from the buckle, causing a faulty seatbelt lock recognition, impairing the functioning of the restraint system and the deployment of the airbag, 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
A12/02466/24Safety recallFireno date · EU Safety GateThe software-based overload protection function cannot sufficiently prevent the starter being overloaded in the event of repeated long start-up attempts. The starter may overheat or sparks may be produced as a result of an increased current flow. This increases the risk of a 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
A12/1282/19Safety recallFireno date · EU Safety GateDue to inadequate screwing the high-pressure pump could become detached and fuel may leak out. This could lead to engine failure and to increased risk of the vehicle catching 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
SR/03823/25Safety recallFireno date · EU Safety GateThe engine starter’s electrical contacts may overheat and cause the vehicle to start improperly. Continued starting attempts can intensify the overheating and ignite surrounding components, potentially leading to a vehicle fire while driving or shortly after parking. 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
G15 · 2018–
The fault list opens on the version page.
21 versions
3.0 l · 2993 cm³
B57D30 · B57D30T0 · ZF8HP70
840d xDrive Cabrio
2019–2022 · 840d xDrive Cabrio
3.0 l · 2993 cm³
B57D30 · B57D30T0 · ZF8HP70
840d xDrive Coupé
2018–2022 · 840d xDrive Coupé
3.0 l · 2993 cm³
B57D30 · B57D30T0 · ZF8HP70
840d xDrive Gran Coupé
2019–2022 · 840d xDrive Gran Coupé
3.0 l · 2993 cm³
B57D30 · B57D30T2 · ZF8HP70
840d xDrive Cabrio
2019–2022 · 840d xDrive Cabrio
3.0 l · 2993 cm³
B57D30 · B57D30T2 · ZF8HP70
840d xDrive Coupé
2018–2022 · 840d xDrive Coupé
3.0 l · 2993 cm³
B57D30 · B57D30T2 · ZF8HP70
840d xDrive Gran Coupé
2019–2022 · 840d xDrive Gran Coupé
3.0 l · 2998 cm³
B58B30 · ZF8HP
840i Cabrio
2019–2022 · 840i Cabrio
3.0 l · 2998 cm³
B58B30 · ZF8HP
840i Coupé
2018–2022 · 840i Coupé
3.0 l · 2998 cm³
B58B30 · ZF8HP
840i Gran Coupé
2019–2022 · 840i Gran Coupé
3.0 l · 2998 cm³
B58B30 · ZF8HP
840i xDrive Cabrio
2019–2022 · 840i xDrive Cabrio
3.0 l · 2998 cm³
B58B30 · ZF8HP
840i xDrive Coupé
2018–2022 · 840i xDrive Coupé
3.0 l · 2998 cm³
B58B30 · ZF8HP
840i xDrive Gran Coupé
2019–2022 · 840i xDrive Gran Coupé
3.0 l · 2998 cm³
B58B30 · ZF8HP
840i Cabrio
2019–2022 · 840i Cabrio
3.0 l · 2998 cm³
B58B30 · ZF8HP75
840i Coupé
2018–2022 · 840i Coupé
3.0 l · 2998 cm³
B58B30 · ZF8HP90
840i Gran Coupé
2019–2022 · 840i Gran Coupé
3.0 l · 2998 cm³
B58B30 · ZF8HP70
840i xDrive Cabrio
2019–2022 · 840i xDrive Cabrio
3.0 l · 2998 cm³
B58B30 · ZF8HP
840i xDrive Coupé
2018–2022 · 840i xDrive Coupé
3.0 l · 2998 cm³
B58B30 · ZF8HP
840i xDrive Gran Coupé
2019–2022 · 840i xDrive Gran Coupé
4.4 l · 4395 cm³
N63B44 · ZF8HP70
M850i xDrive Cabrio
2019–2022 · M850i xDrive Cabrio
4.4 l · 4395 cm³
N63B44 · ZF8HP70
M850i xDrive Coupé
2018–2022 · M850i xDrive Coupé
4.4 l · 4395 cm³
N63B44 · ZF8HP70
M850i xDrive Gran Coupé
2019–2022 · M850i xDrive Gran Coupé
Neighbouring generations
G14/G15/G16 (2018-). If the listing is from the changeover year, look at the neighbour too.
Previous generation
This is the earliest.
This generation
G15 · 2018–
Next generation
This is the latest.
Common questions
2018–. 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.