2011 Toyota Yaris 1.3L Petrol · SL61 LPZ

The defining mechanical story of this 2011 Toyota Yaris is a progressive corrosion pattern, particularly affecting the underbody, brake hydraulic system, and rear suspension, which has now escalated into a major suspension failure and structural concerns at the rear axle mountings. The most recent MOT test on 28 October 2025 produced a Fail with a Major defect for an excessively worn nearside front lower suspension arm ball joint, alongside advisories for corroded exhaust mountings, corroded rear shock absorbers, corroded rear coil springs, and corrosion of the rear inner sills and chassis at the axle mountings. A pass was issued the same day following rectification, but the accumulation of advisories over consecutive years paints a clear picture of a vehicle whose underbody is steadily deteriorating. Earlier failures in October 2023 included excessively corroded front brake pipes on both sides and a parking brake efficiency below requirements, both of which represent serious safety concerns at the time. The trajectory is decidedly worsening, with the 2025 advisories specifically flagging structural corrosion at the rear axle mounting area, a component critical to vehicle integrity. Mileage stands at 91,657 miles over approximately fifteen years, equating to an average of around 6,110 miles annually, which is broadly typical for a vehicle of this age and segment. There are no significant gaps in the testing history, with annual tests consistently recorded from 2020 onwards, indicating the car has remained in regular use rather than being laid up. At this mileage, expectations should include wear on consumables such as brake pads, discs, tyres, and clutch components, but the recorded MOT history shows that the more pressing concerns relate to corrosion rather than simple wear. The annual mileage is not extreme, yet the corrosion issues flagged year after year suggest the vehicle has been exposed to conditions conducive to underbody oxidation, possibly winter road salt or coastal environments. A prospective buyer should pay particular attention to the rear suspension and underbody area, given the advisories regarding corroded rear coil springs, corroded rear shock absorbers, and crucially the corrosion of rear inner sills and chassis at the axle mountings. These areas should be inspected on a ramp or with the vehicle raised, looking for any perforation, flaking metal, or significant section loss around the rear axle mounting points, as progression to a structural failure could render the vehicle unroadworthy in future tests. On a test drive, listen for any clonking or knocking noises from the rear over uneven surfaces, which could indicate worn shock absorber mounts or deteriorating spring seats, and feel for any vagueness or instability in the rear end during direction changes. The nearside front lower suspension arm ball joint that failed in October 2025 should be verified as recently replaced, and the area should be checked for any remaining play by hand with the wheel lifted. The brake hydraulic system requires careful scrutiny following the 2023 failure for excessively corroded front brake pipes and repeated advisories for corroded brake pipes covered in grease or other material across multiple tests. Brake lines, particularly along the underbody and inner wings, should be visually examined for rust pitting, bulging, or any signs of previous repairs using inappropriate fittings. When test driving, the pedal should feel firm with no sponginess or excessive travel, and the parking brake should hold the vehicle securely on an incline given its prior failure for insufficient efficiency. Finally, the subframe corrosion advisory from 2023, combined with the 2025 rear chassis advisory, means a thorough structural inspection by a competent workshop is advisable before purchase, as corrosion at load-bearing mounting points can rapidly progress once initiated and represents the most significant risk to the long-term viability of this vehicle.