"Is the 6 Serisi 630i reliable, and what should you check?"
When buying a used BMW 6 Series 630i 2022 (F06 / F12 / F13 / LCI), the most frequently mentioned issue is oil leaks (gaskets and valve cover). Additionally, abnormal oil consumption is also commonly reported.
Engine: B48
B48B20B · 630i · Used in this car from 2017-2023
Known engine issues
Cooling systemEarly versions of this engine were equipped with short-lived cooling system pipes that often burst, but later plastic was replaced with rubber and the problem went away. Also on the forum they often complain about the short-lived water pump, radiators and coolant expansion tank cap.
Oil consumptionCompared to its predecessors, B48 units are not as prone to oil consumption, but closer to 100,000 km the valve stem seals usually harden and consumption appears. Also worth noting are regular leaks from the oil filter housing, it needs to be monitored.
Floating idleFloating idle speed or regular appearance of lean mixture errors indicate failure of the fuel tank ventilation valve. But it is inexpensive.
+2 more issues on the engine detail page
Known issues and risks
Listed from most frequently reported, each with its source.
Oil leaks (gaskets and valve cover)
Often reported
Localized oil leaks at gaskets such as the valve cover and oil filter housing; rubber gaskets wear over time, causing leaks and stains under the vehicle, and may also lead to a drop in oil level.
Engine Bay
Abnormal oil consumption
Often reported
Some owners of B48 engine vehicles report higher than normal oil consumption, requiring frequent top-ups. Possible causes include worn piston rings/valve guides, internal leaks, or degraded gaskets.
Engine Internal
Belt/chain tensioner noises and problems
Often reported
Some B48 engines are reported to produce metallic noises or rattling when cold. This may be related to the belt tensioner or chain/chain tensioner components. If it worsens, it can lead to excessive chain slack and risk of serious engine damage.
Timing chain
Injector issues and misfires
Often reported
Clogged or faulty injectors in the B48 engine are reported to cause hard starting, rough idle, power loss, and sometimes the check engine light coming on.
Fuel System
Turbocharger and wastegate circuit components
Often reported
Rare but documented turbocharger and wastegate issues; pressure loss, reduced turbo response, or abnormal noises. Symptoms include power loss and check engine light.
Turbo
BMW 6 Serisi 630i technical specs
BMW 6 Serisi 630i (2022): boot 600 L; fuel use 6,1 l/100 km (urban 7,4 l/100 km · extra-urban 5,4 l/100 km); 0–100 in 6.5 s.
Boot capacity
600 L
Fuel consumption
6,1 l/100 km (urban 7,4 l/100 km · extra-urban 5,4 l/100 km)
What should I look for when buying a BMW 6 Series 630i?+
When buying a 2022 630i, check the service history, perform a test drive, and look for engine/transmission warnings. The most commonly reported issues are: oil leaks (gaskets and valve cover); abnormal oil consumption; belt/chain tensioner noises and problems.
What are the chronic problems of the BMW 6 Series 630i?+
The most commonly reported issues are: oil leaks (gaskets and valve cover); abnormal oil consumption; belt/chain tensioner noises and problems.
Is the BMW 6 Series 630i reliable?+
Instead of a simple yes/no, it's better 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; compatibility between the source vehicle and target vehicle is verified by brand, fuel type, engine, and generation. Topics with insufficient evidence are not shown.