KNOWN FAULTS · BMW

Known faults for the BMW Serie 7 (G11/G12).

2015–2022 · Diesel / Petrol / Plug-in hybrid

Sources are not verified in real time and no entry confirms that your car is affected.

4 known faults with sources

Engines: 730d / 740d (B57) (Diesel)

B-engine coolant leaks and EGR coolerCooling / EGR

Engine / equipment: B47 and B57 diesel and B48 and B58 petrol modular engines (BMW from 2014–2015 and MINI from 2014)
Period mentioned: 2014–2026
Symptoms: Coolant loss with a low-level warning, coolant or oil residue at the rear of the engine; on diesels, internal coolant loss with no visible leak (EGR cooler).
Possible cause described: On the B48 and B58 the water pump leaks (from its weep hole) and the oil filter housing with heat exchanger can crack; on 2017–2021 B58s the crankcase ventilation valve also fails. On the diesels the EGR cooler can leak internally and mix coolant with soot: BMW issued a recall over the risk of the intake manifold catching fire.
Check for the garage: Check the coolant level, look for leaks under the water pump and at the oil filter housing, and on diesels confirm by VIN whether the EGR cooler campaign was done.
Cost cited in the source: Water pump: relatively cheap to replace; oil filter housing: more labour-intensive; EGR cooler: free if covered by the campaignA rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: 80,000–195,000 km. This is not a maintenance interval and does not predict a failure.

Engines: 730d / 740d (B57) (Diesel) · 740i / 750i (Petrol) · 740e / 745e (Plug-in hybrid) · M760Li (6.6 V12) (Petrol)

Applies if: Only if fitted with the automatic gearbox described in the record.

ZF 8HP oil level, leaks and harsh shiftsAutomatic gearbox

Engine / equipment: ZF 8HP automatic gearbox in rear-wheel-drive BMWs from 2009 (1 to 8 Series and X: F20, F30, F10, G20, G30, X3, X5…)
Period mentioned: 2009–2026
Symptoms: Harsh shifts (especially engaging D and 1st to 2nd), slipping or jerking; oil leaks from the pan, the mechatronic connector sleeve or the seals.
Possible cause described: BMW's diagnostic guide says an incorrect oil level is a frequent cause of shift complaints and asks for it to be checked every time, even with no visible leaks; the pan can be damaged by impacts. The sealing sleeve between gearbox and mechatronic lets oil through to the connector. The oil, sold as lifetime, degrades.
Check for the garage: Check the oil level with the official procedure (correct temperature and engine running), look for leaks at the pan, connector sleeve and seals, inspect the pan for impact damage and review adaptation values with ISTA.
Cost cited in the source: Oil change with pan and filter: maintenance; sleeve or seals: minor repair; mechatronic: expensive repairA rough figure from the original database, not an up-to-date quote.

Engines: 740i / 750i (Petrol)

BMW petrol electric water pump, leaks and VANOSCooling / leaks / VANOS

Engine / equipment: BMW petrol engines with an electric water pump: N52, N53, N54, N55, N20 and others from 2004–2016
Period mentioned: 2004–2016
Symptoms: Temperature warning and limited power with no prior warning (water pump); burning oil smell or smoke from leaks onto the exhaust or belt; rough idle and VANOS codes (2A82, 2A87).
Possible cause described: The water pump is electric and its electronics fail, often without warning, between 95,000 and 160,000 km. The valve cover and oil filter housing gaskets harden and leak; the latter can drip onto the belt. The VANOS solenoids get dirty and fail.
Check for the garage: Check the water pump and thermostat history, look for leaks at the valve cover and oil filter housing, and read VANOS codes.
Cost cited in the source: Water pump: approx. €550–1,100 fitted; oil filter housing gasket: €275–550; valve cover: €370–740 (converted from dollars)A rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: 95,000–160,000 km. This is not a maintenance interval and does not predict a failure.

Engines: 740e / 745e (Plug-in hybrid)

2020–2021 BMW plug-in hybrid batteryHigh-voltage battery

Engine / equipment: BMW 330e, 530e, X3 xDrive30e, X5 xDrive45e, 745e, i8 and MINI Countryman SE ALL4 plug-in hybrids
Period mentioned: 2020–2021
Symptoms: Usually none before failure. In rare cases, a battery short-circuit with a fire risk, especially while charging.
Possible cause described: During cell production (supplier Samsung) welding debris got into some cells, which can cause a short-circuit. BMW recalled about 26,900 cars worldwide and, until a fix was ready, asked owners not to charge them.
Check for the garage: Confirm by VIN with BMW that the battery recall has been done; if not, do not charge the car until it is checked.
Cost cited in the source: Free under the recall: inspection and module replacement if neededA rough figure from the original database, not an up-to-date quote.