2016 Toyota Prius 1.8L Hybrid electric (clean) · LL16 BAU

A remarkably high-mileage 2016 Toyota Prius with 318,376 recorded miles presents an unusual mechanical narrative: two back-to-back MOT tests on 26 November 2025 and 11 November 2025 both returned clean passes with no advisories or defects, immediately following a failure recorded on the same date as the earlier pass. This sequence indicates that the initial 11 November 2025 test failed on a specific item, which was rectified and re-presented the same day, passing without issue. A similar pattern occurred in May 2025, where a failure on the 15th was followed immediately by a pass on the same date. While the absence of recorded defect details in both failures limits precise analysis of the components involved, the immediate re-test passes suggest these were relatively minor, quickly rectifiable items rather than systemic structural or corrosion failures. The clean post-rectification record demonstrates that the vehicle maintains current roadworthiness and that no chronic advisories or recurring component failures are present in the recorded history. The recorded mileage of 318,376 miles over an approximate ten-year period equates to an annual accumulation of around 31,838 miles, which is substantially above the national average and classifies this as a very high-use vehicle. For a hybrid powertrain of this age and mileage, such sustained heavy usage places significant cumulative demand on the hybrid battery pack, inverter, and internal combustion engine components, alongside conventional wear items like suspension, brake systems, and tyres. Despite the elevated mileage, the absence of any recorded advisories or recurring defects across the recent test history suggests the vehicle has been maintained to a standard sufficient to pass stringent MOT criteria repeatedly, which is a positive indicator for a high-mileage example. There are no significant gaps in the testing record visible in the provided data, and the very recent dual passes confirm the vehicle is currently roadworthy. For a prospective buyer, the priority inspection areas must focus on the components typically subjected to the highest wear on a high-mileage hybrid of this generation. The rear suspension trailing arm bushes, rear coil springs, and rear brake discs and pads should be examined closely, as the Prius is known for wear in these areas after very high mileage accumulation. On a test drive, listen for any clonking or knocking from the rear suspension over uneven road surfaces, particularly over speed humps and potholes, which would indicate compromised rear trailing arm bushes. Check for any pulling to one side under braking, vibration through the brake pedal, or uneven brake disc wear visible through the wheel spokes, particularly on the rear axle where wear tends to be more pronounced due to the regenerative braking system apportioning less friction braking to the rear. The hybrid system itself warrants specific attention during any inspection or test drive. On startup, observe whether the vehicle transitions smoothly to ready mode and whether the engine fires promptly when required, as hesitation or warning lights on the dashboard could indicate hybrid battery degradation. During a test drive, monitor the energy flow display to ensure smooth transitions between electric motor and engine operation, and listen for any unusual vibrations or high-pitched whines from under the bonnet which could suggest inverter or transmission issues. Given the immediate re-test failures in the MOT record without specified defect details, it would be prudent to request full documentation of the specific failures and the rectification work carried out, allowing verification that any repairs were completed to a satisfactory standard. A compression test on the engine and a diagnostic read of the hybrid battery state of health would be highly advisable given the exceptional mileage recorded.