"Is the 6 Serisi 650i reliable, and what should you check?"
When buying a used BMW 6 Series 650i 2013 (F06 / F12 / F13), the most frequently mentioned issue is coolant leaks and cooling system problems. Also, rough idling/misfiring and power distribution issues (injectors/coils/spark plugs) are commonly reported.
Engine: N63
N63B44B · 650i · Used in this car from 2013-2018
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.
Coolant Leaks and Cooling System Problems
Often reported
Many users and mechanics report leaks from plastic cooling system components (e.g., thermostat housing, pipes, and related climate parts) and water pump failures. These micro-leaks can cause intermittent overheating.
Cooling
Rough Idling/Misfiring and Power Distribution Issues (Injectors/Coils/Spark Plugs)
Often reported
Recurring reports of jerking during acceleration and uneven engine operation; symptoms include vibrations at certain RPM ranges and momentary power loss. The most frequently cited causes are faulty injectors, coils, or spark plugs.
Engine Internal
Timing Chain/Valve Cover Gasket Wear
Often reported
Some examples report timing chain stretch or tensioner wear, and valve cover gaskets that leak over time. These can cause metallic noises on startup, timing delays, and increased oil consumption.
Timing Chain
Turbocharger Failures and Oil Leaks
Often reported
The turbos and oil lines on the N63 engine are frequently reported as weak points; oil leaks from pipes, turbine damage due to contamination or oil starvation, and wastegate/geometry failures can occur.
Turbo
BMW 6 Serisi 650i technical specs
BMW 6 Serisi 650i (2013): boot 460 L; fuel use 9,3 l/100 km (urban 13 l/100 km · extra-urban 7,2 l/100 km); 0–100 in 4.4 s.
Boot capacity
460 L
Fuel consumption
9,3 l/100 km (urban 13 l/100 km · extra-urban 7,2 l/100 km)
What should I look for when buying a BMW 6 Series 650i?+
When buying a 2013 650i, check the service history, perform a test drive, and look for engine/transmission warnings. The most commonly reported issues are: coolant leaks and cooling system problems; rough idling/misfiring and power distribution issues (injectors/coils/spark plugs); timing chain/valve cover gasket wear.
What are the common problems of the BMW 6 Series 650i?+
The most frequently reported issues are: coolant leaks and cooling system problems; rough idling/misfiring and power distribution issues (injectors/coils/spark plugs); timing chain/valve cover gasket wear.
Is the BMW 6 Series 650i reliable?+
Rather than a simple yes or no, it's better to weigh the proven pros and cons together. This page lists 4 verified findings.
How does Carbeak collect data?+
The cards on this page are derived from the Difetti fault database records; the source vehicle is matched to the target vehicle by brand, fuel type, engine, and generation. Topics with insufficient evidence are not shown.