2009 London Taxis INT TX4 2.5L Diesel · LO09 FJC

The most recent recorded MOT test, dated 10 January 2022, resulted in a pass, although the same date also carries a fail entry that was presumably rectified prior to the pass being issued. The fail was driven entirely by parking brake efficiency, with the offside rear parking brake inoperative on one side and overall parking brake efficiency falling below requirements. While these are serious regulatory failures, parking brake issues on a high-mileage London taxi of this vintage are typically a function of cable stretch, seized rear caliper mechanisms, or worn shoe material, all of which are readily rectified. However, the broader pattern across the recorded history does not suggest a steadily worsening condition so much as a vehicle subject to predictable consumable wear combined with several recurring advisories. The oil leak advisory has appeared at every single test since 2019, indicating a persistent but non-critical engine seep that warrants monitoring rather than immediate alarm. More concerning is the recurring suspension arm pin or bush wear on the offside front, which escalated from an advisory in January 2022 to a dangerous-level defect on the tyre in 2021 and a major ball joint failure in 2019, suggesting the front suspension geometry of this TX4 is approaching a point of genuine structural concern. Recorded mileage stands at 204,620 miles on a 17-year-old vehicle, equating to roughly 12,036 miles annually, which is exceptionally high and entirely consistent with the operational profile of an INT TX4 hackney carriage. The MOT history provided spans 2019 to 2022, covering only the last three years and not the full mileage accumulation, so it is impossible to determine from the records alone whether mileage has accrued steadily or whether the vehicle has experienced periods of intensive use interspersed with standing time. Given the taxi heritage, both scenarios are plausible. The accumulated wear implications of this mileage are substantial and apply particularly to the diesel engine internals, turbocharger, clutch assembly, automatic transmission torque converter, and the rear axle and differential. Brake discs and pads will have been replaced multiple times, and the steering rack, power steering pump, and front suspension components are likely to be on at least their second or third iteration. For a buyer, the absence of a full service history with corresponding mileage stamps should be treated as a significant information gap. On physical inspection, particular attention should be directed to the front suspension arms, bushes, and ball joints, given the repeated advisories and failures in this area across the MOT history. On a test drive, listen for clonking or knocking noises from the front end over speed humps and uneven surfaces, and check for uneven tyre wear across the front axle, particularly inner-edge wear which typically indicates worn bushes or tracking irregularities. Inspect the offside front tyre for any abnormal wear patterns given the 2021 dangerous tread depth failure. Brake pedal feel should be firm and progressive, and the parking brake should hold the vehicle securely on an incline without excessive lever travel. The persistent engine oil leak should be inspected underneath with a torch and a clean cloth to determine whether it is a static seep from a gasket or a dynamic leak from a rotating seal, and the underside should be checked for oil contamination on the subframe and exhaust downpipe. Beyond the advisories, the age and high mileage of this vehicle demand a comprehensive inspection of items that MOT testing does not fully cover. The 12V battery, likely the original or a replacement of unspecified age, should be load-tested as battery degradation is common on high-mileage vehicles with frequent short cycles. Brake discs should be examined for lipping, corrosion pitting, and binding calipers, particularly after periods of standing. All fluid services, including engine oil, transmission fluid if automatic, brake fluid, coolant, and power steering fluid, should be verified by service records, as calendar-based degradation of brake fluid in particular is a safety concern on a vehicle of this age. Tyres should be checked for sidewall perishing and cracking regardless of tread depth, as age-hardened rubber is a genuine hazard on a high-mileage taxi. Coolant hoses, drive belts, radiator condition, and turbocharger boost response should all be assessed. Finally, given the structural demands of taxi operation, the floor pans, sill sections, and rear suspension mounting points should be examined for corrosion, as these vehicles have historically been prone to structural rust in vulnerable areas, and any such findings would materially affect the vehicle's residual value and roadworthiness outlook.