"Is the 7 Serisi 750i reliable, and what should you check?"
When buying a used BMW 7 Series 750i 2020 (G11/G12 facelift), the most frequently mentioned issue is excessive oil consumption. Oil leaks (gaskets and hoses) are also commonly reported.
Engine: N63
N63B44D · 750i · Used in this car from 2020-2022
Strengths
Provides hurricane-like dynamics
Great tuning potential
Watch-outs
Quite high fuel consumption
Early versions have many problems
Very picky about fuel and oil
Known engine issues
Early year problemsThe first engine modifications caused a lot of trouble: rapid wear of bearings, peeling coating in cylinders, short life of timing chains, and even bursting spark plugs. However, it should be noted that all defective components were replaced under warranty without issue.
Oil consumptionThe majority of owner complaints on specialized forums are related to oil consumption. The culprits are usually stuck piston rings or hardened valve stem seals, but sometimes the cause can be a faulty crankcase ventilation system.
Coolant leaksIn some operating modes, this engine forces coolant out of the reservoir and it leaks directly onto the coils and injectors, which usually leads to serious breakdowns. Therefore, purchasing a plastic deflector to divert antifreeze is highly recommended.
Listed from most frequently reported, each with its source.
Excessive oil consumption
Often reported
Many users and technical reports indicate abnormal oil consumption in the 4.4 V8 N63 engine used in the 7 Series G11 LCI. The issue may appear after tens of thousands of kilometers, requiring frequent oil top-ups, and can cause blue smoke from the exhaust under certain conditions, risking engine damage.
Engine Internal
Oil leaks (gaskets and hoses)
Often reported
Frequent oil leaks are reported due to deteriorated gaskets and components: valve covers, oil filter housing, and turbocharger oil circuit hoses.
Engine Internal
PCV blockage and carbon buildup
Often reported
The crankcase ventilation system (PCV/CCV) can become blocked or fail, increasing internal pressure and allowing oil vapors to enter the intake system, leading to carbon deposits on intake valves.
Engine Internal
Timing chain and guide wear
Often reported
The N63 engine family has historically shown wear issues with timing chain guides and tensioners. Typical symptom is a rattling noise when cold or on startup; as guides worsen, the chain can stretch and in extreme cases jump timing, causing engine damage.
Timing chain
Turbocharger failures and oil line blockage
Often reported
The N63 engine's hot-V layout exposes turbochargers to very high temperatures; oil passages and returns can become blocked or degraded, leading to coking, inadequate bearing lubrication, and turbo damage.
Turbo
BMW 7 Serisi 750i technical specs
BMW 7 Serisi 750i (2020): boot 515 L; fuel use 9,5 l/100 km (urban 13,2 l/100 km · extra-urban 7,4 l/100 km); 0–100 in 4 s.
Boot capacity
515 L
Fuel consumption
9,5 l/100 km (urban 13,2 l/100 km · extra-urban 7,4 l/100 km)
What should I look for when buying a BMW 7 Series 750i?+
When buying a 2020 750i, check the service history, test drive, and look for engine/transmission warnings. Most commonly reported issues: excessive oil consumption; oil leaks (gaskets and hoses); PCV blockage and carbon buildup.
What are the chronic problems of the BMW 7 Series 750i?+
Most commonly reported issues: excessive oil consumption; oil leaks (gaskets and hoses); PCV blockage and carbon buildup.
Is the BMW 7 Series 750i reliable?+
Rather than a simple yes/no, it's best to weigh the proven pros and cons together. This page lists 5 verified findings.
How does Carbeak collect data?+
The cards on this page are derived from the Difetti fault database; brand, fuel, engine, and generation compatibility between the source vehicle and target vehicle are verified. Topics with insufficient evidence are not shown.