2011 Mitsubishi ASX 1.8L Diesel · FV61 RXT

The Mitsubishi ASX passed its most recent MOT on 23 June 2026, although the test recorded two advisories relating to corrosion of the rear sub-frame and suspension arms and a corroded rear exhaust. This continues a trend seen across the last several tests, where corrosion and underbody deterioration have been recurring features. In 2025 the vehicle failed for a defective registration plate lamp and an excessively worn nearside front anti-roll bar linkage ball joint, alongside the same anti-roll bar bush wear, deteriorating CV boot, and a corroded rear brake pipe. In 2024 the vehicle passed but again with advisories for exhaust leakage, rear sub-frame corrosion, general underside corrosion, and corroded front brake pipes covered in grease. The pattern points clearly to a vehicle that is structurally sound enough to pass but is experiencing progressive underbody corrosion, persistent suspension wear, and steady exhaust degradation. The maintenance trend is therefore best described as stable in pass/fail terms but worsening in terms of underlying condition. With 164,628 recorded miles spread over roughly 15 years, the ASX has covered around 10,975 miles annually, which is broadly typical for its age and suggests consistent use rather than long periods of standing. The MOT record shows regular annual testing with no significant gaps in mileage progression, indicating the vehicle has been in active service throughout its life. This level of sustained usage means wear items such as clutches, drivetrain mounts, and engine internal components will have accrued considerable fatigue, while the steady annual mileage reduces the likelihood of issues associated with standing corrosion or seized components. However, the high absolute mileage reinforces the importance of checking service history stamps, cambelt and water pump replacement records if applicable, and the condition of the automatic or manual gearbox and turbocharger if fitted, as these are the components most affected by prolonged high-mileage use. Given the recurring advisories on the rear sub-frame, suspension arms, anti-roll bar bushes, and front suspension arms, a prospective buyer should carry out a careful underbody inspection, ideally with the vehicle on a ramp. Corrosion on structural components should be checked for thickness using a screwdriver or pick at any flaking or bubbling areas, paying particular attention to the rear sub-frame mounting plates, floor pans, and suspension arm attachment points. On a test drive, listen for clonking or knocking noises from the suspension over bumps, particularly from the rear anti-roll bar area, and feel for any vagueness or wandering in the steering, which would indicate further wear on the bushes or ball joints. The front anti-roll bar linkage has already failed once and worn again, so renewing both sides along with the D bushes is likely imminent, and any uneven rear tyre wear would reinforce this concern. The recurring CV boot deterioration on the nearside front driveshaft must be rectified promptly, as a torn boot will allow water and grit ingress and lead to joint failure; listen for clicking or graunching on full-lock turns during the test drive. The brake pipe corrosion advisories, particularly on the nearside rear, warrant a thorough brake fluid check and pipe inspection, as corroded brake lines are a safety-critical failure point at the next MOT. Beyond the advisory items, attention should be directed at the cooling system, given the age and mileage, with checks for coolant leaks, radiator and hose condition, and water pump weepage. The 12V battery should be load-tested, as fifteen-year-old originals are well beyond their service life and can produce intermittent electrical faults. Brake discs and pads should be inspected for wear and lipping, and the rear exhaust noted for active blowing or restriction, as exhaust corrosion has been flagged at multiple tests. Oil and transmission fluid levels and condition should be checked on the dipstick, particularly given the earlier advisory for an engine oil leak, and the underside should be examined for any fresh drips or staining. With this combination of age, mileage, and established corrosion patterns, a pre-purchase inspection by a qualified technician is strongly recommended to confirm structural integrity and to budget for the suspension, brake, and exhaust refurbishment work that is clearly approaching.