2001 Toyota Yaris 1.5L Petrol · RE51 AEA

The defining mechanical story of this 2001 Toyota Yaris is one of intermittent but distinctly recurrent component failures, primarily affecting the rear suspension and emissions system, set against a backdrop of otherwise unblemished annual tests. Across five recorded MOT events between 2021 and 2023, the vehicle secured passes with no advisories or defects on three occasions, yet suffered two failures during that same window, each citing major category defects. The most recent test on 5 October 2023 resulted in a clean pass with no defects recorded, but this followed a failure the day before on 4 October 2023 that flagged a serious fluid leak from the offside rear shock absorber alongside a fractured or broken offside rear coil spring, both of which represent serious safety-critical items. The earlier failure on 26 October 2021 was equally concerning, identifying an illuminated airbag warning lamp indicating an SRS fault, excessive carbon monoxide at the tailpipe after the second fast idle, and an exhaust leak at a clamp likely to affect emissions readings. The pattern suggests a vehicle that can present a clean bill of health on one visit yet exhibit significant defects on another, warranting cautious interpretation of the overall roadworthiness history. Recorded mileage stands at 135,504 miles across approximately 25 years of service, equating to an annual accumulation of roughly 5,420 miles, which is notably low for a vehicle of this vintage. This modest usage rate points to either predominantly short urban journeys, extended periods of standing, or a combination of both. The MOT records show testing activity in 2021, 2022, and 2023, with no recorded tests prior to 2021 within the dataset, which may indicate a multi-year gap in testing or simply that earlier records fall outside the scope provided. Such low annual mileage on a 25-year-old car carries specific mechanical implications: consumable components like brake discs, callipers, and tyres can suffer from surface corrosion and uneven wear patterns due to infrequent use, while rubber elements throughout the suspension, steering, and drivetrain may have hardened or perished from prolonged static periods rather than wearing out through normal service life. A prospective buyer should pay particular attention to the rear suspension assembly, given that both rear dampers and coil springs were flagged as recently as October 2023. On a test drive, listen for clonking or knocking noises from the rear axle over uneven road surfaces, particularly single speed bumps and potholes, which would suggest worn bushes, top mounts, or remaining damper issues not yet flagged at test. The offside rear coil spring in particular should be inspected visually for any signs of corrosion pitting or sagging, and the vehicle should sit level at the rear when unladen. Push down firmly on each rear corner and release; if the body takes multiple oscillations to settle or produces a metallic rattle, the dampers or spring seats may be compromised. Given that the rear shock absorber was leaking fluid on the same side, the buyer should also check the nearside rear for symmetry, as fluid contamination on one unit often accelerates wear on the opposing damper. The emissions and exhaust system history demands equally rigorous scrutiny, since the 2021 test recorded excessive carbon monoxide alongside a clamp-related exhaust leak. On inspection, the buyer should listen for any ticking or hissing from the exhaust joints, particularly near the front pipe and manifold connection, which would indicate a compromised gasket or failed clamp. A cold start should produce minimal visible smoke, and once at operating temperature, the exhaust note should be smooth without irregular rasping. The supplementary restraint system fault recorded in 2021 is a particularly serious concern that should not be overlooked; an illuminated airbag warning lamp means at least one airbag or pretensioner may not deploy in a collision, and confirmation that the fault has been professionally diagnosed and rectified using genuine Toyota components and a clear diagnostic printout would be essential before purchase. Finally, given the low annual mileage, the brake system warrants a thorough check including a firm pedal feel without sponginess, discs that are free from heavy edge lipping despite potentially being original, and flexible brake hoses that show no cracking or bulging under pressure.