2006 Toyota Yaris 1.0L Petrol · YY06 NNB

The most recent DVSA examination recorded on 14 September 2021 resulted in a fail with multiple major defects, which represents a clear and serious departure from the otherwise unremarkable pass history stretching back to 2014. The major items centred on structural corrosion rather than routine consumable wear, specifically a holed and weakened nearside rear sill within the seat belt anchorage prescribed area and an excessively corroded nearside rear suspension component mounting at the axle location, with an accompanying advisory noting that the rear suspension and chassis are heavily corroded overall. Prior to this, the vehicle had passed four consecutive tests from 2017 through 2020 with no recorded advisories, and had only carried minor corrosion and user-entered advisories on earlier tests. The trajectory therefore shifts abruptly from a stable, well-maintained condition to a structural integrity concern that, if not professionally rectified, will almost certainly recur at the next presentation and may have implications for the vehicle's continued roadworthiness and insurance status. Recorded mileage stands at 85,262 miles across approximately twenty years, which equates to a yearly average of around 4,263 miles, a figure that is notably low for a vehicle of this vintage and typically indicative of either light private use or extended periods of standing. The MOT history shows tests recorded fairly consistently from 2014 onwards, but the absence of any mileage figures within the DVSA extract makes it difficult to confirm whether accumulation has been gradual or sporadic. Low annual mileage of this nature reduces wear on internal drivetrain and engine components but conversely elevates the risk of age-related degradation, including corrosion of structural and suspension components, dried and cracked rubber, oxidised brake components, and deterioration of fluids and seals purely through calendar ageing rather than active service. Given the serious nature of the 2021 corrosion failures, a prospective buyer should treat any subsequent rectification as absolutely critical and must obtain documentary evidence, ideally a detailed invoice from a reputable workshop, confirming that the corroded sill has been professionally repaired by welding in new steel and that the nearside rear axle mounting area has been reinforced or renewed to restore structural strength. A thorough physical inspection should follow, placing the vehicle on a ramp to examine the rear chassis legs, sill seams, wheel arches, and suspension mounting points for any bubbling, flaking, or holed steel that could suggest either incomplete repair or further progression of corrosion since the work was carried out. During a road test, particular attention should be paid to any clonking or knocking from the rear suspension over bumps, any vagueness or wandering from the rear axle under load, and any uneven or accelerated tyre wear across the rear axle, as all of these can be symptomatic of weakened or distorted rear mounting points. It is also worth closely inspecting the registration plate lamp and both rear position lamps for correct simultaneous operation, as lighting faults of this nature are quick and inexpensive to remedy but were the immediate cause of the 2021 fail. Beyond the structural concerns, the earlier advisories relating to a corroded fuel filler pipe and items of incorrect specification such as an unclamped or incorrectly sized battery and an offside rear tyre exhibiting age cracking all reinforce the need for a careful physical walk-round and under-bonnet assessment. The 2006 Yaris is now twenty years old, so even allowing for the relatively low mileage, age-related perishing should be expected on all tyres regardless of tread depth, on drive belts and hoses, and on suspension bushes and anti-roll bar links, all of which should be examined for cracking, splitting, or hardening. Brake discs should be checked for severe lipping and advanced corrosion, particularly given the likelihood of prolonged standing, and the handbrake and calipers should be verified for free operation to confirm nothing has seized from disuse. Fluid condition and service history merit close scrutiny, with particular emphasis on the age of the coolant, brake fluid, and the timing chain or belt replacement interval, as calendar-based degradation rather than mileage governs much of the maintenance requirement on a low-use vehicle of this age. A complete service history and confirmation of recent cambelt or timing chain replacement would therefore be highly reassuring before committing to purchase.