This is the plug-in hybrid NX (commonly sold as the NX 450h+ in many markets): it pairs a petrol engine with electric motors and an automatic hybrid transaxle, so electricity use and charging habits strongly affect real-world running costs. Lexus/Toyota hybrids have a good reliability record, but Lexus parts and dealer servicing sit above mainstream pricing; check remaining high-voltage battery warranty and that the charging lead and on-board charger work as expected.

• High-voltage battery state-of-health report (capacity % or degradation) and evidence the car has been regularly charged; confirm any remaining battery warranty paperwork.
• Charging port and cable condition plus a full-charge test (ensure AC charging completes and the car shows expected range/EV mode).
• Hybrid-system warning codes and inverter/coolant service history (look for stored hybrid-system or inverter faults on a diagnostic scan).
• Brake and rotor condition — check for unusual wear patterns despite often-light pad wear from regenerative braking and ensure ABS/regen feels smooth.
• Listen for unusual electric-motor or transaxle noises under acceleration and check 12V battery condition (PHEVs can suffer 12V drain if left unused).