2007 Toyota Prius 1.5L Electric · RE07 PLZ

The defining mechanical story of this 2007 Toyota Prius is a pattern of recurring underbody and suspension deterioration that has been flagged consistently at every test since 2020, indicating progressive corrosion rather than isolated wear. The most recent pass on 3 December 2025 added further advisories for nearside and offside front lower suspension arm corrosion, a nearside front coil spring corroded advisory (the third such advisory across three consecutive tests), and headlamp lens contamination, suggesting the corrosion trajectory is ongoing rather than arrested. The 2024 test history includes a failure with dangerous defects for tread depth below 1.6mm on all three recorded tyres simultaneously, a missing offside front road wheel fixing classified as a major, and a defective wiper blade, indicating that tyre monitoring and basic fastener security had lapsed prior to the November 2024 retest. A 2021 failure for a fractured offside rear coil spring is particularly relevant for a hybrid of this age, as spring failures on a vehicle approaching 125,000 miles point to material fatigue in the suspension that warrants close inspection of the remaining springs and their seats. Against an age of 19 years and recorded mileage of 125,299 miles, this Prius accumulates roughly 6,595 miles annually, which sits at the lower end of typical use for its cohort and suggests periods of lighter running or possible standing time. Test intervals are reasonably consistent at annual cadence from 2020 onwards, with the 2024 entry showing only a three-day gap between the failed and passed tests, so there is no evidence of a multi-year lay-up that would have triggered battery or seal-specific deterioration concerns. The relatively modest annual mileage means the corrosion flagged repeatedly on coil springs, suspension arms, shock absorber gaiters and the underbody is more likely attributable to age and environmental exposure than to high-mileage mechanical wear, and the brake disc pitting advisories recorded in 2022, 2023 and 2024 align with this pattern of surface degradation rather than pad-induced wear from heavy use. For a prospective buyer, the priority areas on inspection are the front suspension assemblies, given that coil spring corrosion has been flagged on both sides in 2022 and again on the nearside in 2023 and 2025, and a fractured rear coil spring was recorded in 2021. On a test drive, listen for clonking or rattling noises over uneven surfaces, particularly from the front, which would indicate progressed corrosion at the spring seats or fractured spring ends; any uneven ride height or visible sag should be treated as a serious concern. The front lower suspension arm corrosion advisories from December 2025 should prompt a physical check of the arm body and its bushings for any signs of distortion, and a thorough examination of the rear underbody and subframe mounting points for the general corrosion noted in 2020 is warranted, as 2020 corrosion advisories have a habit of advancing over subsequent winters. The braking system requires targeted attention following repeated rear brake disc pitting advisories across three consecutive tests in 2022, 2023 and 2024, alongside a slightly noisy offside front wheel bearing advisory in November 2024. On the road, feel for pedal judder under light or moderate braking, which would confirm the discs have worn beyond their skim allowance, and listen for a rumbling or droning noise from the front that rises and falls with speed to verify the wheel bearing condition. The 2022 minor exhaust leak advisory should prompt a check for ticking or hissing sounds from the exhaust under load, particularly at the rear joint. The headlamp lens contamination advisories from the latest test warrant confirmation that light output remains adequate on dipped beam, and the previous tyre-related dangerous defects serve as a reminder to verify that all four tyres have at least 2mm of tread remaining and are of consistent age and specification before purchase.