2004 Toyota Yaris 1.0L Petrol · RO04 YRM

The 2023 MOT failure highlights significant issues, including excessive exhaust carbon monoxide levels, a non-functional windscreen washer, and corroded rear brake pipes. These indicate potential engine management problems, poor fluid system maintenance, and ongoing corrosion risks. The windscreen washer failure is a minor safety concern, but the CO reading suggests a critical fault in the exhaust or emission control system, which could impact both safety and emissions compliance. Recurring mechanical patterns include corrosion of rear brake pipes, documented in every MOT from 2020 to 2023. This suggests a persistent issue with brake system integrity, possibly due to environmental exposure or inadequate maintenance. Worn anti-roll bar linkage bushes also appear repeatedly, though they have not yet caused excessive movement. These issues point to gradual wear in suspension components, which may require replacement to prevent future handling or safety risks. The trend shows stability in the types of faults but no improvement. Brake pipe corrosion and anti-roll bar wear have persisted for over three years, with no evidence of resolution. The 2023 failure introduces a new concern with the exhaust system, which could indicate worsening engine or catalytic converter health.