2009 Toyota Prius 1.8L Hybrid electric · FE59 DFZ

The most recent DVSA test on 2 December 2024 resulted in a pass with no advisories or defects recorded, which on the surface suggests a sound current roadworthiness position. However, when reviewing the broader pattern across the documented MOT history, the trend is mixed rather than uniformly stable. The 2023 pass carried five advisories covering both rear suspension mounting areas, a rear brake pipe, front brake pads, and a nearside front suspension arm bush, while the immediately preceding test the day before produced majors for headlamp aim and washer fluid. Earlier entries show a 2022 pass with brake pad, nearside front tyre, and both rear inner suspension mounting advisories, and a 2020 cycle which included a fail for dangerously worn front brake pads under 1.5 mm, alongside advisories for a broken exhaust hanger, corroded brake pipe, and worn front discs. The recurring theme of rear suspension mounting corrosion across consecutive tests warrants close attention, as this area can deteriorate progressively and ultimately threaten structural integrity if left unaddressed. With 255,149 miles recorded on a 2009 vehicle, the annual average stands at roughly 15,009 miles, which is high for a car of this vintage and points to consistent, sustained use rather than long periods of standing. High accumulated mileage on a Prius of this age means the hybrid system components, including the inverter coolant pump, hybrid battery pack, and traction motor, will have endured considerable thermal cycling, and prospective buyers should seek documented evidence of hybrid system health checks. The mileage is consistent year on year with no obvious gaps, which is mechanically preferable to a low-mileage example that may have suffered from corrosion through standing, but it does mean wear items such as engine mounts, suspension bushes, and wheel bearings will be closer to the end of their service life. Given the recurring advisories on rear suspension mounting corrosion, a prospective buyer should carry out a thorough visual inspection of both rear suspension turret and inner sill areas, ideally on a lift, looking for any advancement of corrosion beyond the previous descriptions. On a test drive, listen for clonking or knocking noises from the rear over uneven surfaces, which would indicate worn bushes or play in the suspension components, and pay attention to the steering for vagueness or pull that may suggest worn front suspension arms, particularly the nearside arm which was previously flagged. Inspect the rear brake pipe carefully for any active corrosion weeping through the protective grease coating, as this advisory has appeared on multiple occasions and brake pipe replacement becomes mandatory once corrosion compromises pipe wall thickness. The front brake system should also be evaluated, as the pattern of pad wear advisories in 2022 and 2023, combined with the 2020 disc lipping, suggests aggressive pad wear characteristic of this model, and a physical measurement of remaining pad and disc material is essential before purchase. Beyond the documented defects, the high annual mileage and seventeen-year age profile demand attention to time-served components that may not appear on MOT records. Tyres should be examined not only for tread depth but for sidewall cracking and perishing consistent with age, even if recent tyres have been fitted, and the spare should be checked for condition. The 12-volt auxiliary battery, which is critical for hybrid system startup, is well beyond its typical four to five year service life and should be load tested, while the hybrid battery pack cooling fan and intake should be inspected for dust accumulation that causes overheating. Brake fluid should be assumed due for renewal on age grounds, and a check of coolant condition for the engine and inverter loops is advisable, as degradation leads to water pump and inverter failure on high-mileage examples. Finally, verify service book stamps or invoices to confirm that oil changes have been carried out at appropriate intervals, and request a read of any stored diagnostic trouble codes from the hybrid system, as intermittent faults on the high-voltage battery cells are a known concern on Prius models approaching this mileage.