2014 BMW i8 B38K15T0/Synchronous electric motor (I12)
I12 / 2-door Coupe / Roadster / Global (markets with hybrid vehicle regulations, including EU, USA, Japan)
B38K15T0Synchronous electric motorExact year/trim recordGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- High voltage battery degradation after many years
- Carbon buildup in direct injection engine
- Coolant leaks in electric cooling system
First checks
- Hybrid battery health status
- Inverter and electric motor function
- Engine oil and coolant levels
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
- 2014 marked the production launch year of the BMW i8 plug-in hybrid sports car.
- Markets vary slightly in specs due to emissions and electric range regulations.
- No manual transmission was offered at any market.
- Oil capacity includes filter change; always confirm with BMW service manual.