2005 Vauxhall Combo 1.7L Diesel · KC55 CDY

The 1.7-litre diesel engine in the 2005 Combo typically returns around 45-50 mpg in mixed use, though a vehicle of this age and mileage is unlikely to still achieve those figures. Tax for a 2005-plate diesel van sits in a higher bracket than modern equivalents — expect around £165-£190 per year for road tax given the CO2 output of that engine. Insurance should be relatively cheap (group 3-4), but parts availability and labour costs for an older commercial-derived vehicle can be disproportionately high.

Estimated annual running costs, allowing for the advisories outstanding on the most recent MOT, are likely to be in the £1,200-£1,800 range, with the upper end reflecting likely brake disc replacement, suspension bush work, and addressing the persistent oil leak. If the structural corrosion flagged on the failure test requires professional repair, add £500-£1,000 in one-off bodywork costs. Realistically, a vehicle at 171,000 miles with active corrosion issues is approaching the point where the cost of keeping it roadworthy exceeds its market value.

Begin with a full underbody inspection on a ramp, focusing on the rear axle, both rear backing plates, the exhaust, and the nearside rear body mounting area — all flagged for corrosion on the most recent MOT. The offside rear shock absorber casing is also corroded and warrants a close look for shock fluid leaks. Check both front coil springs and the offside rear spring for fractures, as the March 2026 failure listed three broken springs; replacements may have been fitted but used or budget springs are a common shortcut.

The engine oil leak noted across multiple tests (2022, 2025, 2026) needs identifying — request a clean engine bay so the source can be traced, typically the crankcase gasket, sump, or injector pump area on this engine. Inspect the brake discs at all four corners for the pitting and corrosion flagged, and check the rear brake pipes for further corrosion beyond the nearside section that was repaired. Finally, verify all lights, wipers, and the offside rear indicator colour, as the failure test included several minor but testable defects that suggest general neglect of routine maintenance.