This is most likely the G30-generation 5 Series PHEV (commonly sold as the 530e in 2021) with BMW’s automatic Steptronic gearbox. The car behaves like a normal petrol saloon when the battery is depleted, but real-world economy depends on how often you charge — expect a modest electric-only range (typically a few dozen kilometres) and better overall MPG if used as intended. Pay attention to the hybrid-specific items: battery state-of-health, charging equipment and any software/ECU updates for the e-drive.

• Hybrid traction-battery state-of-health report and a recent full-charge range test (battery degradation reduces electric range noticeably over a few years).
• Charging lead(s) present and in good condition; charging port socket clean and undamaged and on-board charger functions correctly.
• Hybrid-system service history and any software updates; check for coolant leaks around inverter/charger and proper operation of electric drive modes.
• Automatic gearbox behaviour and service history (ZF 8-speed Steptronic should shift smoothly; ask for transmission fluid/service records and scan for gearbox fault codes).
• Brakes and regenerative braking feel — check pad/rotor condition and electronic parking-brake operation, plus tyre condition and age.