2016 Ford Mondeo 2.0L Diesel · ML66 WTP

A 2016 Ford Mondeo covering 144,512 miles presents a distinctive mechanical profile, with the most recent test on 2024-08-30 yielding both a failure and a same-day retest pass that carries forward. The retest pass still records advisories for perished offside and nearside rear tyres, suggesting the rubber compounds on the rear axle are approaching the end of their service life. The failure itself was driven by two significant items: a malfunctioning Tyre Pressure Monitoring System and an Engine Management Indicator Lamp indicating a malfunction, both of which became 'prs' (present and rectified at station') defects, meaning the vehicle was repaired and re-presented on the same day to clear the failure. The earlier MOT history shows a cleaner pattern, with passes in 2019, 2020, and 2022 that recorded no advisories, but a 2021 test flagged wear on both front brake discs and corrosion-related issues on both rear brake discs. The sudden cluster of advisories and a failure after years of clean tests points to consumables and emissions-related components that have aged into a zone requiring closer attention. At an average of roughly 14,451 miles per year over a ten-year service life, this Mondeo sits in a high-mileage usage band for its age, well exceeding the average annual accumulation for a comparable Ford. There is a significant 17-month interval between the December 2021 pass and the August 2024 test, which may suggest periods of reduced mileage or gaps in testing compliance, though this is not uncommon. The high annual mileage, combined with the recent advisory cluster and an emissions-related fault code, is consistent with elevated wear on engine internals, clutch components, turbocharger systems, suspension bushes, and drivetrain mounts. Such usage also places greater demand on brake systems, particularly discs and pads, and accelerates corrosion in underbody components, brake lines, and exhaust mounting points. Prospective buyers should prioritise a thorough pre-purchase inspection given the mileage band, with particular attention to the engine management system that triggered the recent MIL illumination. A diagnostic scan should be carried out to retrieve any stored fault codes from the engine control unit, as intermittent MIL activation can stem from issues ranging from lambda sensors and mass airflow meters to ignition coils or evaporative emissions leaks, and any recurring fault will re-trigger the warning lamp. On test drive, the vehicle should be monitored for any hesitation under acceleration, rough idle, or unusual exhaust emissions, particularly if the engine management light re-illuminates during the road test. Given the advisories on both front and rear brake discs in 2021, a physical inspection of brake component condition is required rather than relying solely on the MOT advisory wording. On test drive, listen for any binding calipers or squealing from the brake pedal, feel for any judder or vibration through the steering wheel or the vehicle structure under firm braking, and check that the vehicle pulls to either side under braking, which would indicate uneven pad wear or a seized caliper slide pin. The perished rear tyres flagged in the most recent advisory should also be inspected, as sidewall cracking in particular can develop on vehicles kept predominantly outdoors or those of this age, and any uneven shoulder wear on the rear axle could point to worn rear suspension bushes or weakened coil springs. Finally, the high oculinal figure warrants careful inspection of clutch operation, manual gearbox synchro feel or automatic transmission shift quality, and turbocharger function if the diesel variants are being evaluated, with attention to any blue or excessive black smoke during the post-startup warm-up period.