2018 Isuzu D-MAX 2.5L Diesel · T666 AAD

The most recent DVSA MOT test for this 2018 Isuzu D-Max was conducted on 27 May 2026 and resulted in a Pass, although two advisories were issued relating to corrosion on the nearside and offside front brake pipes where they pass over or near the flexible hose sections. Reviewing the broader test history reveals a generally stable but progressively worsening maintenance pattern. The vehicle passed its 2023 examination with no advisories whatsoever, indicating a clean mechanical state at that point. However, the 2024 test cycle introduced tyre wear advisories on both front wheels along with the first brake pipe corrosion advisories, and a fail was issued on 22 May 2024 due to a major exhaust gas leak from a broken central rear exhaust section that also required a silencer replacement. The vehicle subsequently passed the following day under a retest arrangement, and by 2025 the brake pipe corrosion had progressed to include rear nearside lines. This trajectory suggests that while the vehicle remains roadworthy, an owner who does not address the recurring brake line corrosion or monitors the exhaust system carefully could face escalating rectification costs or a future failure. With 45,128 miles recorded over an eight-year period, this D-Max has covered approximately 5,641 miles annually, which is well below the typical usage rate for a working pickup truck of this type. Such low mileage can reflect occasional recreational or light utility use rather than sustained commercial operation, and it carries its own set of mechanical considerations. Long periods of standing can lead to binding brake calipers, corrosion on brake discs causing judder on first application, and degradation of oils and fluids purely through age rather than use. Conversely, low mileage typically preserves the engine internals, clutch, and drivetrain from the wear that higher-mileage examples suffer, particularly the timing chain, turbocharger, and dual-mass flywheel components which can be costly on diesel pickups. Given the recurring brake pipe advisories across multiple test cycles, a prospective buyer should arrange a thorough inspection of the entire braking system, with particular attention to the rigid metal brake lines running along the chassis and any flexible rubber hoses. Surface corrosion on the pipes themselves does not necessarily indicate imminent failure, but it is a progressive condition that will eventually require replacement, particularly as corrosion migrates from the outer surface into the pipe wall, potentially compromising braking integrity. On a test drive, listen for any squeal, grinding, or pulling to one side under braking, and check for a soft or spongy brake pedal that may indicate fluid ingress through corroded lines. The historical exhaust failure should also prompt inspection of the centre and rear sections for signs of blueing, hangers giving way, or fresh joint leaks, as exhaust systems on pickups subjected to underbody corrosion from off-road or winter road salt use can deteriorate rapidly. Beyond the recorded advisories, the age and low mileage profile of this vehicle warrants a number of standard but essential checks before purchase. Tyres should be examined closely for sidewall perishing and cracking from age even if the tread depth appears adequate, as eight-year-old rubber compounds harden and lose grip regardless of remaining tread. The 12V battery should be load-tested, since low mileage vehicles with frequent short journeys or extended standing periods often suffer from chronically undercharged batteries that fail without warning. Brake discs should be checked for severe surface corrosion pitting and the calipers for seized slide pins, particularly after the vehicle has been parked. Fluid services including brake fluid, coolant, and transmission oil should be verified against the service schedule, as these degrade with calendar age independent of mileage. Finally, inspecting the underside for structural corrosion, examining suspension bushes and coil springs for sagging or cracking, and confirming a complete service history with stamps at appropriate intervals will be essential to verifying that this low-use pickup has been properly maintained rather than simply left standing.