2020 Lexus RX 3.5L Hybrid electric (clean) · K1 TUA

The Lexus RX 450h typically returns around 35-40 mpg in real-world driving, considerably better than the conventional 3.5 V6 version thanks to the hybrid system. Road tax for a hybrid vehicle registered before April 2025 sits in a low band, often around £155-£170 annually depending on exact emissions. Insurance for the RX 450h usually falls within group 40-45, so expect premiums of £600-£900 per year for an experienced driver with a clean record.

Servicing costs are moderate for the segment — Lexus main dealer servicing is typically £350-£500 per visit, with intervals every 12 months or 10,000 miles. Hybrid-specific maintenance (inverter coolant, hybrid battery checks) is generally inexpensive. Brake wear is reduced thanks to regenerative braking, which is a long-term cost advantage. Estimated annual running costs fall in the £1,800-£2,400 range covering fuel, tax, insurance, and routine maintenance.

The MOT history is clean, but you should still inspect areas that the model data identifies as common failure points. Headlamp alignment and condition is a frequent MOT failure across the RX range — check for condensation inside the headlamp clusters, which is common on this generation, and ensure both dipped and main beam functions work correctly. Inspect the suspension arms for any play or knocking, as suspension components rank in the top failure reasons for the model. Tyre condition should be examined on all four corners for even wear; uneven front tyre wear can suggest alignment issues or worn bushes.

Beyond the model's common failure areas, check the hybrid system warning lights on the dashboard — any hybrid system malfunction indicator should prompt immediate investigation. Inspect the rear of the vehicle for tow bar damage if a tow bar is fitted, as RX hybrids are sometimes used for towing. Examine the undertrays for damage from speed humps, which is common on low-slung SUVs. Finally, verify the 12V auxiliary battery condition, as this is often overlooked but can cause starting issues if weak.