2024 Lexus RX 450H+ Premium Phev CVT 2.5L Hybrid electric · 123 AA

The RX 450h+ sits in a premium bracket, so running costs reflect that positioning. Insurance is likely to sit in a high group given the car's value and performance, while road tax will be modest thanks to the plug-in hybrid's favourable BiK and VED treatment as a low-emission vehicle. Fuel economy depends heavily on charging habits; owners who charge regularly will see very low consumption, while those running on the petrol hybrid system alone should expect mid-30s mpg at best.

Routine maintenance through Lexus specialist centres tends to be more expensive than mainstream brands, and PHEV-specific components such as the charging cable, inverter coolant and high-voltage battery cooling system can add to longer-term costs. Annual servicing costs on a premium hybrid of this type commonly run £300–£500 depending on the work required, and tyres for the large wheels fitted to the Premium trim can be £200+ each. Estimate roughly £1,800–£2,400 per year for combined fuel, tax, insurance and maintenance under typical mixed use.

Because there is no MOT history to draw on, the inspection checklist must rely on general guidance for the model and known considerations for plug-in hybrids of this age. Visually inspect the charging port and cable for damage, and verify that the car charges correctly on both a domestic socket and a wallbox if available. Listen for any unusual noises from the petrol engine when it cuts in, as early PHEV examples can occasionally exhibit rough transitions between electric and petrol modes.

Examine the bodywork for parking damage, particularly to the larger alloys fitted to Premium trim, and check all four tyres for even wear which can indicate alignment or suspension issues. Inside, test every electrical feature including the infotainment screen, climate control, heated seats and all USB ports, as premium trim electrical faults are the most common cause of early warranty claims. Under the bonnet, look for any signs of fluid leaks, corrosion around the high-voltage orange cabling, and ensure the 12V auxiliary battery (which supports the hybrid system) is in good condition, as a failing auxiliary battery can cause confusing hybrid warnings.