2004 MG ZS 2.5L Petrol · KX04 XGK

A pattern of consecutive test-day defects, rather than chronic advisories, defines the mechanical story of this 2004 MG ZS. The most recent assessment on 15 April 2025 returned a clean pass with no advisories or failures recorded, marking a return to trouble-free roadworthiness after a turbulent 2023 to 2024 testing window. Within that window, the car failed on 8 March 2023 and again on 28 February 2024, yet passed with no defects on the very next day in both instances. Such same-day pass-fail-pass sequences typically indicate marginal, intermittent component behaviour that an examiner can sometimes pass depending on assessment criteria, rather than a serious structural or safety concern. With two consecutive clean passes now on record, the immediate mechanical trend is stable and improving, but the buyer should not discount the underlying cause of those earlier failures, as no defect details were captured on the official record. Recorded mileage of 36,268 miles against a 22-year registration equates to an annual accumulation of roughly 1,649 miles, which is exceptionally low for a vehicle of this age. A saloon of this era, particularly an MG ZS, is generally expected to cover between 5,000 and 8,000 miles per year when in regular service, so this figure points strongly toward extended periods of storage or very occasional use. Mechanical consequences of such a low usage profile typically manifest as seized or binding brake calipers, dried and cracked suspension bushes, perished rubber coolant and vacuum hoses, flat-spotted tyres, and dried-out constant-velocity joint gaiters. Additionally, the MOT record contains only five entries across the vehicle's lifetime, with notable gaps between tests, suggesting it has spent considerable time off the public road, during which deterioration through lack of use rather than wear is the primary concern. Because no specific advisories were recorded in any of the passes, targeted component guidance must focus on areas most commonly affected by long-term standing on a front-wheel-drive MG Rover product. During a test drive, the buyer should pay close attention to the condition of the front suspension, particularly the lower wishbone bushes and anti-roll bar drop links, listening for clonks or knocks over speed humps and uneven road surfaces. Brake pedal feel should be assessed for firmness after a few firm applications, as a soft or spongy pedal may indicate seized rear caliper sliders or corroded brake pipe sections behind the wheel arches. Under the bonnet, check for perished coolant hoses, brittle vacuum lines around the inlet manifold, and any signs of oil leakage from the cam cover gasket or sump, all of which are typical of an engine that has spent long periods unused. For the bodywork and underside, particular attention should be given to corrosion in common MG ZS areas, notably the front suspension subframe, rear wheel arches, and brake and fuel pipe runs along the chassis. Tap the brake pedal firmly while stationary to ensure the car does not take an unusually long time to firm up, which would suggest a sticking caliper or master cylinder seal deterioration from dormancy. On the move, check for steering wander or a pulling sensation under braking, which could indicate binding callipers or uneven brake pad transfer to the disc surface following periods of disuse. Finally, despite the encouraging two clean passes, the lack of advisory detail means a thorough pre-purchase inspection on a ramp, with particular focus on the undercarriage and brake system, remains strongly advisable before committing to purchase.