2015 Toyota Prius 1.8L Hybrid electric (clean) · LL13 VRN

The most recent DVSA examination dated 14 January 2026 resulted in a pass, though the prior day a major failure was issued before rectification work was completed and the vehicle returned for retest. The maintenance trend across the recorded history is one of persistent and recurring advisory items rather than outright deterioration, but the cumulative picture shows an ageing vehicle accumulating wear on its steering, suspension, and brake systems. The advisory issued at the latest test for slight play in the nearside front drag link end ball joint is the third such steering component advisory in three years, following track rod end play in 2024 and 2023. The January 2026 failure for excessively corroded rear brake pipes on three separate sections is the most concerning single finding, as brake line corrosion represents a serious safety issue that can progress to fluid leakage and brake failure if left unaddressed. The fluctuating front service brake noted at the same test suggests uneven caliper operation or pad bedding issues. The recurrence of front and rear brake disc pitting advisories in 2024 and 2025 also points to a braking system nearing the end of its service life. With a recorded mileage of 256,240 miles over approximately eleven years, this Prius has averaged around 23,295 miles per annum, which is substantially higher than typical private use. There are no large gaps in the testing record that would suggest prolonged standing, and mileage has accumulated consistently. High annual mileage of this nature accelerates wear on all consumables, including brake pads, discs, tyres, suspension bushes, and the hybrid drivetrain components such as the inverter coolant pump and traction battery cooling fan. The absence of any recorded failure relating to the hybrid system is encouraging, but at this mileage the 12V auxiliary battery, inverter coolant, and brake fluid should be considered overdue for replacement based on calendar age rather than distance covered. The high usage also means that any rubber components, particularly suspension bushes and engine mountings, will have endured significant thermal and mechanical cycling. A prospective buyer should prioritise a thorough physical inspection of the brake system before purchase, including a careful check underneath the vehicle for any further corrosion on the rear brake pipes beyond the three sections already replaced, as corrosion of this type frequently affects adjacent lines. A test drive should include firm pedal applications to detect any pulling, vibration, or soft pedal feel, as well as listening for any grinding or pulsation through the brake pedal that would indicate the pitted discs have reached a serviceable limit. The steering system warrants particular attention due to the repeated advisories for ball joint play on both drag link and track rod ends; listen for clunks or knocks over speed bumps and during full-lock manoeuvres, and inspect for uneven front tyre wear which would confirm the play is producing toe misalignment. Any steering deviation or vagueness on the road should be treated as an immediate rectification item. Given the high mileage and the calendar age of the vehicle, several time-based items should be verified regardless of MOT status. Tyres should be examined for both tread depth and sidewall cracking or perishing, as eleven-year-old rubber degrades from age alone. The 12V battery should be load tested, as a failing auxiliary battery can cause erratic hybrid system warnings and dashboard faults unrelated to the traction battery. Brake fluid and engine coolant should be considered for replacement on age rather than mileage, with brake fluid particularly susceptible to moisture absorption which lowers boiling point and can cause brake fade under heavy use. The hybrid system should be observed during a cold start for any unusual warning lights, and a thorough under-bonnet inspection should look for signs of fluid leaks from the inverter, transaxle, or power steering system. A compression test on the petrol engine and a check of the engine oil for any sign of coolant contamination would be prudent given the accumulated distance, alongside verifying that the service book contains evidence of regular oil and filter changes at appropriate intervals.