2004 Workhorse Motor Home 6.5L Diesel · OU04 VOC

Fuel economy for a 6.5-litre diesel motorhome of this size and age is likely to be in the region of 18–25 mpg depending on load and driving style, giving a real-world range of roughly 200–280 miles per fill-up. Road tax for a vehicle registered in 2004 with an engine over 6.0 litres will fall into the highest VED band, typically £760+ per year unless it qualifies for the reduced 'historic vehicle' rate, which would only apply once it becomes eligible. Insurance will sit in a high group given the vehicle type, value and engine size — quotes from specialist motorhome insurers are essential and commonly exceed £600–£900 annually for comprehensive cover.

Routine maintenance on a heavy motorhome chassis is priced higher than for a car, with an MOT currently capped at £54.85 but a full service likely to cost £250–£400 and brake or suspension work easily exceeding £500 per axle. Tyres are a particular expense — commercial-sized tyres for this vehicle can cost £150–£300 each, and four or six may be needed. Based on fuel, tax, insurance and typical maintenance, expect an annual running cost in the region of £2,500–£3,500 for moderate use.

Begin with a thorough inspection of the steering system — the 2025 advisories flagged play in the drag link end ball joint, idler arm ball joint and offside track rod end ball joint, and the 2021 test also recorded drag link end play. These are classic wear points on heavy commercial chassis and a complete steering overhaul including replacement arms, joints and possibly the steering box should be budgeted. Next, examine all brake pipes closely for corrosion; both nearside and offside front brake pipes were flagged as corroded at both the 2021 and 2025 tests, suggesting systemic corrosion that may require pipe replacement rather than cleaning.

Inspect the rear shock absorber upper bushes (both sides flagged in 2021 and 2025), the tyres (particularly the nearside rear inner, flagged for uneven wear in 2025), and the headlamp reflectors. The fuel pipe leak between axles noted at the 2025 failure is a serious safety concern — confirm it has been properly repaired and not simply sealed. Beyond MOT items, inspect the chassis for surface corrosion or structural rust, the habitation compartment seals for water ingress, and all fluid levels. A damp or musty smell inside the living area can indicate costly water damage to the wooden furniture and electrical systems.