2004 MG ZS 2.5L Petrol · KX54 TBU

Running a 22-year-old MG ZS with a 2.5-litre petrol engine is unlikely to be cheap by modern standards. Realistic fuel economy is probably in the mid-20s mpg, meaning fuel costs alone for a typical 8,000-mile year would run to around £2,000-£2,500 at current prices. Road tax will fall into the older pre-2006 bracket, which is relatively modest, but insurance for a performance-oriented 2.5-litre saloon could land in a higher group than buyers might expect, particularly for younger drivers.

Routine maintenance such as brake components, fluid changes, and tyres is straightforward, but anything involving the engine, gearbox, or specialist MG components will be more expensive due to limited parts supply. Budget realistically around £800-£1,200 per year in total running costs, assuming no major repairs. The older the vehicle gets, the more likely unexpected bills become, so keeping a healthy contingency fund is sensible.

The model-level MOT data flags headlamp issues, excessively worn service brakes, and parking/secondary brake problems as the most common failure points, so these areas should be examined first. Check all headlamp alignment and condition, paying attention to cracked or fogged lenses which frequently cause failures on older vehicles. The service brake and parking brake systems on a car of this age are likely to need attention, so test both firmly on a hill during the test drive and budget for replacement if grab or stopping power feels weak.

The 2.5-litre KV6 engine used in this variant is known to suffer from oil consumption issues and timing chain wear at higher mileages, even at this relatively modest 64,281 miles. Listen for any rattling from the engine on cold start, check the underside for oil leaks, and inspect the coolant for any signs of mixing with oil. Beyond the model weaknesses, carry out a thorough body and underside inspection for corrosion, particularly around the wheel arches, sills, and subframe mounting points, as a car of this vintage living through British winters will almost certainly show some rust. Finally, check the electrics including the dashboard cluster, central locking, and electric windows, which are common niggles on older MG products.