2010 Ford Mondeo 2.0L Diesel · EN10 NEJ

Chronic underbody corrosion and progressive suspension wear define the mechanical history of this 2010 Ford Mondeo, with the record showing a clear pattern of advisories building across nearly every test since 2021. The most recent outcome on 2 October 2025 was a pass, but it was issued only one day after a fail on 1 October 2025 for a Major defect on the offside rear lower suspension arm, recorded as corroded and seriously weakened under section 5.3.3 (b) (i). That single-day gap between failure and re-test, accompanied by an advisory noting the lower treated in underseal, indicates the corrosion was likely masked or treated rather than fully rectified, and buyers should not treat the pass as evidence that the structural integrity of the rear suspension has been conclusively restored. Earlier advisories from 2024 corroborate the broader corrosion picture, with both rear lower suspension arms flagged as corroded but not seriously weakened, and an offside front lower suspension arm ball joint noted as having slight play. Mileage accumulation across the recorded tests sits at 132,262 miles over approximately sixteen years, equating to a fairly typical annual average of around 8,200 miles. Testing intervals appear broadly annual from 2020 onwards, with no extended gaps that would suggest the vehicle was laid up for prolonged periods, so the underbody deterioration cannot be attributed to long-term standing. Instead, the steady annual mileage combined with repeated underframe, subframe, coil spring, and brake pipe advisories points to a chassis that has been exposed to consistent winter road use, with the corrosion noted on the front and rear subframes in 2022 and the brake pipes in 2022 representing the kind of progressive structural surface rust that worsens year on year once initiated. For a prospective buyer, the priorities on inspection must centre on the underbody and suspension components specifically flagged. The offside rear lower arm that failed in October 2025 should be closely examined, ideally on a ramp, to confirm whether the replacement or repair carried out the following day was a new component or a refurbished arm, and whether the corrosion extends into the mounting points, hub carrier, or surrounding chassis leg. Front lower arm bushes, offside front ball joint play, and both rear coil springs have all been flagged across consecutive tests, so on a test drive listen for clonking or knocking over uneven surfaces, particularly from the rear, and feel for any vagueness or knocking through the steering when traversing potholes or speed bumps. Anti-roll bar linkage ball joint dust covers were recorded as severely deteriorated on both sides in 2023, so clattering or looseness from the front anti-roll bar under cornering loads is worth checking. Brake pedal feel, stopping bite, and any vibration or judder under heavy braking should be assessed, given the 2024 advisories for scored front discs and thinning pads on both axles. A thorough inspection of the brake lines, particularly along their full length including underbody runs and any flexible sections near the rear axle, is essential given the 2022 advisory noting corrosion and grease coverage, as compromised brake pipes are a direct safety concern and a common failure item on vehicles of this age and mileage. The subframe corrosion noted in 2022 should be re-evaluated, as surface corrosion recorded as not seriously weakened two to three years ago can progress, and any flaking, lifting, or perforation of the metal should prompt a professional structural assessment. Exhaust emissions exceeded the manufacturer plate limit at the 2021 re-test, so a cold-start and idle observation is worthwhile, watching for excessive smoke or an illuminated management light. Finally, the underseal treatment referenced in October 2025 warrants careful visual checking for bubbling, flaking, or cracking of the coating, which can trap moisture against already corroded steel and accelerate hidden deterioration rather than prevent it.