2020 Ford Transit Custom 300LIMITD Eblue 2.0L Diesel · WR20 OUG

The defining mechanical story for this 2020 Transit Custom is a pattern of recurring drive shaft boot deterioration and persistent engine management issues, suggesting underlying wear that has not been fully resolved despite repeated intervention. The most recent test on 4 June 2026 recorded a Pass, but only after a fail the day before flagged a split nearside front outer CV boot and an inoperative engine management indicator lamp, both classified as Major defects. The CV boot problem is particularly telling, as a similar advisory was issued in June 2025 (classified as Minor), indicating that the boot had been deteriorating for at least twelve months before failing entirely. Combined with the engine MIL issue, which also appeared as a Major failure in June 2024, there is a clear theme of deferred maintenance on items that directly affect drivetrain integrity and emissions compliance. The earlier headlamp aim failures in 2023, classified as PRS, point to additional electrical or adjustment concerns that have since been resolved but warrant ongoing attention. At 68,681 miles over approximately six years, this vehicle accumulates around 11,447 miles annually, which sits firmly within expected usage parameters for a commercial van of this age. There are no significant gaps in testing history, with annual MOTs recorded consistently from 2023 through 2026, and the mileage progression appears steady rather than erratic. This level of usage is consistent with regular commercial operation, meaning wear on consumables such as clutches, brake components, and suspension bushes should be proportionate to mileage rather than aggravated by extended periods of standing. The steady annual accumulation suggests the vehicle has been working consistently rather than laid up, which is generally favourable for preventing issues such as seized brakes or perished rubber components, but does mean that mechanical components have been subjected to continuous load cycles. For a prospective buyer, the CV boot history demands immediate physical inspection of both front drive shaft boots for fresh grease deposits, cracking, or perishing, and a test drive should include slow-speed full-lock turns in both directions to listen for clicking, knocking, or vibration that would indicate joint damage from contamination. Given the repeat engine MIL faults, a diagnostic scan should be conducted to retrieve any stored fault codes, particularly relating to the diesel particulate filter, EGR valve, or sensor circuits, and the buyer should verify whether any remedial work was carried out between the 2024 and 2026 tests. On the road, the van should be observed for hesitation, excessive smoke from the exhaust, or an illuminated emissions-related warning lamp, as the intermittent nature of the MIL faults suggests an underlying sensor or emissions system issue that may recur. Given the Dangerous tyre tread failure in 2024, a close inspection of all four tyres for age-related cracking, uneven wear patterns, and current tread depth is essential, along with verification that a replacement tyre was fitted at the correct size and load rating for the vehicle's commercial specification. Additional areas worth scrutinising include the front suspension, as commercial vans of this age and mileage commonly exhibit wear on anti-roll bar bushes, drop links, and wishbone bearings, which would manifest as clonking over speed bumps or imprecise steering. The brake system should be checked for binding calipers, which are a known Transit Custom weakness, by confirming the vehicle rolls freely when released on level ground and inspecting the discs for lipping or scoring. Given the vehicle's commercial use, the underside should be examined for corrosion on brake pipes, fuel lines, and structural mounting points, with particular attention to jacking areas and the rear axle assembly. Finally, verifying the service history independently, particularly for timing belt replacement on the diesel engine and recent CV boot rectification work, will provide essential context for whether the flagged issues have been addressed properly or are likely to recur.