2006 Lexus RX400H 3.3L Hybrid electric · EX56 WBY

The Lexus RX400h maintains a generally stable roadworthiness status, evidenced by a clean pass in November 2025 at 138,711 miles. While the vehicle successfully cleared its most recent inspection, the presence of advisories regarding rear suspension corrosion and pitted front brake discs indicates that the car is now entering a phase where age-related degradation requires closer monitoring. The maintenance trend remains consistent, with the vehicle avoiding major structural failures, though the transition from a clean pass in October 2024 to the current list of advisories suggests that consumable components are beginning to reach the end of their service life. Annual mileage accumulation has remained remarkably steady over the last four years, averaging roughly 3,500 miles per annum since August 2022. This usage pattern is significantly lower than the historical average for a vehicle of this age, suggesting the car has been used for light duty or short journeys rather than high-speed motorway travel. The consistent, low-mileage progression indicates that the hybrid drivetrain and mechanical systems have not been subjected to excessive strain, which often helps preserve the longevity of complex components like the inverter and battery cooling systems. Prospective buyers should prioritise a physical inspection of the suspension mounting points and the rear trailing arms, as the recent advisory regarding corrosion confirms that surface oxidation is becoming a factor. The front brake discs require a visual assessment for scoring and pitting to determine if they remain within manufacturer tolerance or necessitate immediate replacement. Given the history of suspension bush wear noted in August 2023, a test drive should focus on identifying any knocking noises or vague steering feedback, which would confirm whether those components have finally degraded beyond the advisory stage. Addressing these minor mechanical items now will prevent them from developing into more costly repairs during the next annual inspection.