2004 Mitsubishi Shogun 3.2L Diesel · GY54 ABK

A recurring theme of brake pipe corrosion under heavy grease dressing has dominated the roadworthiness record of this 2004 Mitsubishi Shogun across the last four consecutive MOT tests, with the same advisory reappearing in 2022, 2023, 2024 and again at the most recent pass on 27 January 2025. That latest test also flagged slight surface corrosion across the underside of the vehicle, suggesting that corrosion is becoming progressively more widespread rather than remaining isolated to the brake lines. Beyond the corrosion pattern, the vehicle did pass cleanly on this most recent occasion with no fresh mechanical defects raised, but it should be noted that an earlier test on 25 January 2022 produced a significantly more serious result. On that same day the vehicle was both failed and passed, with the failure listing recording a dangerous nearside front tyre with tread depth below the legal 1.6mm minimum, a major defect on the offside track rod end ball joint with excessive play, and the same brake pipe and tyre edge wear advisories. The progression since then appears to have stabilised after remedial work, though the persistent advisories indicate underlying chassis and braking hydraulic components that will continue to demand attention. With 163,135 miles accumulated over approximately 22 years, the Shogun is averaging around 7,415 miles per year, which sits broadly in line with typical usage for a vehicle of this vintage. There are no significant gaps in the MOT testing record to suggest any extended period off the road, which is reassuring given that a lay-up of several years would normally prompt concern about seized calipers, perished suspension bushes, and deteriorated fuel and brake lines. The mileage has clearly been accumulated consistently rather than through sudden spikes, which tends to be kinder to the drivetrain, transfer box and propshaft components that are particularly relevant on a four-wheel-drive Shogun of this age. At this accumulated mileage, however, the major mechanical consumables including the timing belt, clutch, driveline mounts and turbocharger if fitted, will all have been replaced multiple times, and the fact that none of these have raised advisories is a positive sign, though they should still be inspected directly rather than assumed sound. Given the repeated brake pipe advisories across multiple test cycles, particular attention should be paid during a pre-purchase inspection to the condition of every visible section of brake line, particularly along the chassis rails, under the fuel tank area, and at the flexible hoses near each wheel arch where corrosion tends to initiate. On a test drive, the buyer should listen for any sharp knocking or clonking from the front suspension over uneven surfaces, which would indicate worn bushes, dropped links, or play in the front hubs, and any clunking on initial acceleration would suggest worn propshaft universal joints or failing transfer box mounts typical of high-mileage Shoguns. Steering should be assessed for vagueness, pulling to one side under braking, or any knocking through the rack, as the track rod end failure recorded in early 2022 confirms that wear in the steering linkage is a real risk on this platform. The brakes themselves should be tested with progressively harder stops from around 30 mph to check for pedal judder suggesting warped front discs, any pulling to one side indicating a binding or seized caliper, and a soft or spongy pedal that would point to further deterioration of the corroded pipework. Closer inspection should also focus on the underside condition referenced in the 2025 advisory, with a torch check of the chassis rails, subframe mounting points, suspension turrets, and fuel tank strap areas to identify any advanced perforation rather than just the surface scale noted by the tester. The offside front tyre edge wear flagged in both 2022 test entries suggests a camber or suspension geometry issue that may not have been fully rectified, so the buyer should check for uneven shoulder wear on any current tyres and confirm that the front wheel alignment is within specification. Given that this Shogun will also rely on its centre and rear differentials, the test drive should include tight low-speed manoeuvres in both four-wheel-drive high and low range to listen for any whining, clonking or binding that would suggest worn diff components. Finally, the minor advisories recorded in 2022 for an insecure battery and an inoperative nearside registration plate lamp are trivial in isolation, but they do highlight the value of a comprehensive pre-delivery inspection rather than relying solely on the MOT pass certificate, particularly on a 22-year-old vehicle where the borderline advisories of recent years point to a car that is still mechanically functional but operating on borrowed time with its brake and chassis components.