Plastic guide rails hold the timing chain in place.
Applies to the engine B48A20, B38A15P.
Repair: 700–2,900 EUR
vinkodex.BMW 1 Series F70 common faults.
2024–. The fault list covers this generation and the engines in it. If the listing gives the exact version, pick it below.
Alexander-93 / CC BY-SA 4.0
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.
critical6
The high pressure pump of these common rail diesels (Bosch CP4) can fail while driving.
Applies to the engine B47C20B.
In these engines the water pump is not belt driven but has its own electric motor.
Applies to the engine B38A15P, B48A20.
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 B47C20B.
On the early model years the timing chain of the B47 stretches faster than intended.
Applies to the engine B47C20B.
Repair: 1,200–4,500 EUR
The B47 replaced the N47, and the maker fixed the timing chain problem.
Applies to the engine B47C20B.
expensive1
A rubber gasket seals the oil filter housing to the block.
Applies to the engine B48A20.
cheap repair1
The maker builds the charge pipe out of plastic, and the coupler at the throttle body is the critical point.
Applies to the engine B48A20.
Repair: 100–400 EUR
Official recall2 recallsShowThe 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.
A12/00996/24Safety 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
SR/04168/25Safety recallInjuriesno date · EU Safety GateThe seatbelts in the second row may not have been manufactured correctly and could cause the car-sensitivity sensors to fail. This could reduce the protective effect of the seatbelts and lead to 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
F70 · 2024–
Pick the version.
The fault list opens on the version page.
9 versions
EngineVersionPowerFuel · transmissionBody
1.5 l · 1499 cm³
B38A15P · 7DCT
116
2024– · 116
122 HPpetrol · automatichatchback1.5 l · 1499 cm³
B38A15P · 7DCT
120
2024– · 120
156 HPpetrol · automatichatchback1.5 l · 1499 cm³
B38A15P · 7DCT
120 M Sport Design Edition
2024– · 120 M Sport Design Edition
156 HPpetrol · automatichatchback2.0 l · 1995 cm³
B47C20B
118d
2024– · 118d
150 HPdiesel · manualhatchback2.0 l · 1995 cm³
B47C20B
118d M Sport Design Edition
2024– · 118d M Sport Design Edition
150 HPdiesel · manualhatchback2.0 l · 1995 cm³
B47C20B · 7DCT
120d
2024– · 120d
150 HPdiesel · automatichatchback2.0 l · 1995 cm³
B47C20B · 7DCT
120d M Sport Design Edition
2024– · 120d M Sport Design Edition
150 HPdiesel · automatichatchback2.0 l · 1998 cm³
B48A20 · 7DCT
123 xDrive
2024– · 123 xDrive
204 HPpetrol · automatichatchback2.0 l · 1998 cm³
B48A20 · 7DCT
M135 xDrive
2024– · M135 xDrive
300 HPpetrol · automatichatchback
Neighbouring generations
F70 · 2024–
F70 (2024-). If the listing is from the changeover year, look at the neighbour too.
Common questions
About this generation
Which years does this page cover?
2024–. 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.