2004 Land Rover Discovery 2.5L Diesel · HS04 HTZ

A Discovery of this vintage with two recorded failures in the last twelve months, both at the most recent attempts in 2025 and mid-2024, points to an underlying pattern of intermittent mechanical or structural issues that were not rectified between tests. The intervening pass at September 2024 came after the July 2024 failure, suggesting a repair was undertaken, but the subsequent September 2025 failure indicates the underlying concern has either returned or a separate issue has surfaced. Notably, the DVSA records list no defects against any of these tests, which limits the diagnostic detail available, but the bare-fact fail entries imply the defects were substantial enough to be categorised as major or dangerous rather than minor. For a prospective buyer, the inability to scrutinise the precise nature of these failures is itself a risk that warrants further investigation via the previous owner or testing station. With 120,170 miles recorded over approximately 22 years, the vehicle averages around 5,460 miles annually, which is notably low for a working SUV and consistent with either light private use or extended periods of standing. The gap between the 2025-09-18 failure and the prior pass just twelve months earlier suggests the vehicle has been kept in active use recently, while the earlier sequence of annual passes from 2022 through mid-2024 indicates a period of stable roadworthiness. Low annual mileage on a vehicle of this age raises specific concerns around perished rubber components, seized brake calipers, corroded brake discs, and stale fluids, particularly given that Land Rovers of this era rely heavily on underbody protection and regular driving to prevent corrosion-related seizure of suspension and drivetrain joints. Any combination of low annual mileage with recent failures would warrant close inspection of items typically affected by long static periods. A pre-purchase inspection should focus heavily on the underside, particularly the rear chassis crossmembers, outriggers, and trailing arm mounts, which are known corrosion hotspots on the Td5 and early V8 Discovery 2 platform. On a road test, listen for clonks or knocking from the rear suspension over undulations, as perished trailing arm bushes and tired coil springs are common at this mileage. Steering should be checked for vagueness or shudders through the front wheels, indicating worn front hubs, swivel pin bearings, or track rod ends, all of which require costly rectification. Apply the brakes firmly from speed and feel for pedal judder or pulsing, which would suggest front disc warping often seen on vehicles that have stood with seized caliper pistons. Cold-start behaviour is also critical on the 2.5 Td5 engine: blue smoke on overrun, excessive crankcase fumes from the oil filler, or a rattling injector loom should all prompt deeper investigation, as these are well-documented weaknesses on this powertrain. Finally, request sight of any repair invoices corresponding to the 2024 and 2025 failures, as the absence of recorded defects in the DVSA summary does not mean the test station cannot provide a breakdown of what was failed and what was subsequently replaced. A full underbody examination on a ramp remains essential, paying particular attention to the condition of the chassis legs forward of the rear wheels, the handbrake mechanism, and any evidence of fluid leaks from the transfer box or rear differential. The Discovery is a mechanically complex vehicle with a known appetite for corrosion and electrical gremlins, and the combination of a low recorded annual mileage and repeated recent test failures means that a thorough independent assessment is not merely advisable but essential before committing to purchase.