Plastic guide rails hold the timing chain in place.
Applies to the engine B48A20M1, B48A20T1, B48A20U1 and 1 more.
Repair: 700–2,900 EUR
2019–2024. The fault list covers this generation and the engines in it. If the listing gives the exact version, pick it below.

Alexander Migl / 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 B48A20M1, B48A20T1, B48A20U1 and 1 more.
Repair: 700–2,900 EUR
The high pressure pump of these common rail diesels (Bosch CP4) can fail while driving.
Applies to the engine B47C20.
In these engines the water pump is not belt driven but has its own electric motor.
Applies to the engine B38A15, B48A20M1, B48A20T1 and 1 more.
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 B47C20.
On the early model years the timing chain of the B47 stretches faster than intended.
Applies to the engine B47C20.
Repair: 1,200–4,500 EUR
The B47 replaced the N47, and the maker fixed the timing chain problem.
Applies to the engine B47C20.
A rubber gasket seals the oil filter housing to the block.
Applies to the engine B48A20M1, B48A20T1, B48A20U1.
The maker builds the charge pipe out of plastic, and the coupler at the throttle body is the critical point.
Applies to the engine B48A20M1, B48A20T1, B48A20U1.
Repair: 100–400 EUR
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.
A12/00702/20Safety recallInjuriesno date · EU Safety GateThe driver's airbag may be damaged during activation and may fail to inflate sufficiently. This will impair its restraining effect, increasing the risk of an injury. Furthermore, the driver could be injured by hot gases leaking from the airbag's gas generator.
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
A12/01785/21Safety 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
A12/0367/19Safety recallInjuriesno date · EU Safety GateThe nuts of the rear light brackets may be contaminated with oil. Oil can cause cracks in the light brackets and the rear lights may separate from the vehicle leading to 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
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
F40 · 2019–2024
The fault list opens on the version page.
53 versions
1.5 l · 1496 cm³
B37C15 · GS6-UKL
116d
2019–2024 · 116d
1.5 l · 1496 cm³
B37C15 · 7DCT
116d
2019–2024 · 116d
1.5 l · 1496 cm³
B37C15 · GS6-UKL
116d Business Edition
2019–2024 · 116d Business Edition
1.5 l · 1496 cm³
B37C15 · 7DCT
116d Business Edition
2019–2024 · 116d Business Edition
1.5 l · 1496 cm³
B37C15 · GS6-UKL
116d Business Edition Plus
2019–2024 · 116d Business Edition Plus
1.5 l · 1496 cm³
B37C15 · 7DCT
116d Business Edition Plus
2019–2024 · 116d Business Edition Plus
1.5 l · 1496 cm³
B37C15 · 7DCT
116d Corporate Executive
2019–2024 · 116d Corporate Executive
1.5 l · 1496 cm³
B37C15 · GS6-UKL
116d Corporate Executive
2019–2024 · 116d Corporate Executive
1.5 l · 1496 cm³
B37C15 · 7DCT
116d Introduction Edition
2019–2024 · 116d Introduction Edition
1.5 l · 1499 cm³
B38A15 · GS6-UKL
116i
2019–2024 · 116i
1.5 l · 1499 cm³
B38A15 · 7DCT
116i
2019–2024 · 116i
1.5 l · 1499 cm³
B38A15 · GS6-UKL
116i Business Edition
2019–2024 · 116i Business Edition
1.5 l · 1499 cm³
B38A15 · 7DCT
116i Business Edition
2019–2024 · 116i Business Edition
1.5 l · 1499 cm³
B38A15 · GS6-UKL
116i Business Edition Plus
2019–2024 · 116i Business Edition Plus
1.5 l · 1499 cm³
B38A15 · 7DCT
116i Business Edition Plus
2019–2024 · 116i Business Edition Plus
1.5 l · 1499 cm³
B38A15 · 7DCT
116i Introduction Edition
2019–2024 · 116i Introduction Edition
1.5 l · 1499 cm³
B38A15 · GS6-UKL
118i
2019–2024 · 118i
1.5 l · 1499 cm³
B38A15 · 7DCT
118i
2019–2024 · 118i
1.5 l · 1499 cm³
B38A15 · 7DCT
118i Business Edition
2019–2024 · 118i Business Edition
1.5 l · 1499 cm³
B38A15 · GS6-UKL
118i Business Edition
2019–2024 · 118i Business Edition
1.5 l · 1499 cm³
B38A15 · GS6-UKL
118i Business Edition Plus
2019–2024 · 118i Business Edition Plus
1.5 l · 1499 cm³
B38A15 · 7DCT
118i Business Edition Plus
2019–2024 · 118i Business Edition Plus
1.5 l · 1499 cm³
B38A15 · 7DCT
118i Corporate Executive
2019–2024 · 118i Corporate Executive
1.5 l · 1499 cm³
B38A15 · GS6-UKL
118i Corporate Executive
2019–2024 · 118i Corporate Executive
1.5 l · 1499 cm³
B38A15 · 7DCT
118i Introduction Edition
2019–2024 · 118i Introduction Edition
1.5 l · 1499 cm³
B38A15 · GS6-UKL
118i
2019–2024 · 118i
1.5 l · 1499 cm³
B38A15 · 7DCT
118i
2019–2024 · 118i
1.5 l · 1499 cm³
B38A15 · GS6-UKL
118i Corporate Executive
2019–2024 · 118i Corporate Executive
1.5 l · 1499 cm³
B38A15 · 7DCT
118i Corporate Executive
2019–2024 · 118i Corporate Executive
2.0 l · 1995 cm³
B47C20 · GS6-UKL
118d
2019–2024 · 118d
2.0 l · 1995 cm³
B47C20 · GA8F22AW
118d
2019–2024 · 118d
2.0 l · 1995 cm³
B47C20 · GA8F22AW
118d Business Edition
2019–2024 · 118d Business Edition
2.0 l · 1995 cm³
B47C20 · GS6-UKL
118d Business Edition
2019–2024 · 118d Business Edition
2.0 l · 1995 cm³
B47C20 · GS6-UKL
118d Business Edition Plus
2019–2024 · 118d Business Edition Plus
2.0 l · 1995 cm³
B47C20 · GA8F22AW
118d Business Edition Plus
2019–2024 · 118d Business Edition Plus
2.0 l · 1995 cm³
B47C20 · GS6-UKL
118d Corporate Executive
2019–2024 · 118d Corporate Executive
2.0 l · 1995 cm³
B47C20 · GA8F22AW
118d Corporate Executive
2019–2024 · 118d Corporate Executive
2.0 l · 1995 cm³
B47C20 · GA8F22AW
118d Introduction Edition
2019–2024 · 118d Introduction Edition
2.0 l · 1995 cm³
B47C20 · GA8F22AW
120d
2019–2024 · 120d
2.0 l · 1995 cm³
B47C20 · GA8F22AW
120d Business Edition
2019–2024 · 120d Business Edition
2.0 l · 1995 cm³
B47C20 · GA8F22AW
120d Business Edition Plus
2019–2024 · 120d Business Edition Plus
2.0 l · 1995 cm³
B47C20 · GA8F22AW
120d xDrive
2019–2024 · 120d xDrive
2.0 l · 1995 cm³
B47C20 · GA8F22AW
120d xDrive Business Edition
2019–2024 · 120d xDrive Business Edition
2.0 l · 1995 cm³
B47C20 · GA8F22AW
120d xDrive Business Edition Plus
2019–2024 · 120d xDrive Business Edition Plus
2.0 l · 1998 cm³
B48A20U1 · 7DCT
120i
2019–2024 · 120i
2.0 l · 1998 cm³
B48A20U1 · 7DCT
120i Business Edition
2019–2024 · 120i Business Edition
2.0 l · 1998 cm³
B48A20U1 · 7DCT
120i Business Edition Plus
2019–2024 · 120i Business Edition Plus
2.0 l · 1998 cm³
B48A20M1 · 7DCT
128ti
2019–2024 · 128ti
2.0 l · 1998 cm³
B48A20M1 · 7DCT
128ti Business Edition
2019–2024 · 128ti Business Edition
2.0 l · 1998 cm³
B48A20M1 · 7DCT
128ti Business Edition Plus
2019–2024 · 128ti Business Edition Plus
2.0 l · 1998 cm³
B48A20T1 · GA8F22AW
M135i xDrive
2019–2024 · M135i xDrive
2.0 l · 1998 cm³
B48A20T1 · GA8F22AW
M135i xDrive Business Edition
2019–2024 · M135i xDrive Business Edition
2.0 l · 1998 cm³
B48A20T1 · GA8F22AW
M135i xDrive Business Edition Plus
2019–2024 · M135i xDrive Business Edition Plus
Neighbouring generations
F40 (2019-2024). If the listing is from the changeover year, look at the neighbour too.
Common questions
2019–2024. 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.