2022 BMW 7 Series 740Li B58B30M0/B58B30O0 (G12)
G12 / Long-wheelbase Sedan / Global (notably USA, China, Europe with minor market-specific variations)
B58B30M0B58B30O0Exact year/trim recordGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- High-pressure fuel pump wear
- Valve stem seal oil leak (noted in turbo inline-6 engines)
- Timing chain tensioner noise on high mileage
First checks
- Oil level dipstick unavailable; use BMW diagnostic tool or service indicator
- Inspect turbocharger operation and boost pressure
- Check electrical connections for mild hybrid module (if equipped)
Before replacing parts
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- 740Li 2022 model continued G12 chassis with mild styling revisions versus predecessor.
- Mild hybrid system added in some markets to improve efficiency; availability varies by region.