2009 Toyota IQ 1.0L Petrol · GF59 LLP

The vehicle is currently roadworthy but the maintenance trend shows a clear trajectory of structural degradation. While it passed its most recent test in February 2026 at 103,108 miles, the tester identified multiple points of corrosion on the front sub-frame and inner rear vehicle structure. This represents a progression from the general underbody very corroded warning noted in late 2022, indicating that while the car is not yet a safety risk, the structural integrity of the chassis is actively declining over time. At 17 years old, the recorded mileage of 103,108 miles averages to approximately 6,065 miles per year. This low annual usage is consistent with a short-distance city car, yet the data reveals a significant usage gap between December 2022 and January 2024 where the vehicle covered only 4,259 miles in over thirteen months. Such low mileage often correlates with the accelerated oxidation of components due to the vehicle sitting stationary, which appears to have contributed to the surface corrosion seen on the brake pipes and exhaust system. A buyer must conduct a thorough physical inspection of the underbody to assess the depth of the rust. The recurring reports of exhaust leaks since 2022 and the corroded offside front brake pipe suggest the system is thinning and will soon require total replacement. Attention is also required for the rear brake discs, which have been flagged as worn and pitted in both 2024 and 2026, indicating a lack of preventative replacement of these components. The minor corrosion on the sub-frame should be checked with a probe to ensure it has not progressed into structural thinning that would lead to a future failure.