2010 Peugeot 407 2.0L Diesel · OO51 AJH

The 2.0 HDi diesel in the 407 is capable of 40-50 mpg on a run, though real-world figures for high-mileage examples often settle in the mid-30s. Annual VED for a 2010 diesel of this engine size typically falls into a higher band, and with the 407's larger body, insurance tends to sit in groups 24-30. Combined fuel, tax, and insurance costs for a year of typical use will likely fall in the £1,800-£2,400 range, before maintenance.

Maintenance costs for a 407 of this age and mileage are where the budget pain really lies. Parts such as rear shock absorbers (£120-£200 each fitted), anti-roll bar links (£80-£150), and drive shaft CV boots (£150-£250) all featured in the recent MOT and are realistic near-term expenses. Budget an estimated £1,000-£1,500 annually for routine maintenance plus reactive repairs, giving a realistic total running cost of £2,800-£3,900 per year once fuel, tax, insurance, and maintenance are combined.

Begin with a physical inspection of the rear suspension, as the offside rear shock absorber has had 'light misting of oil' flagged on three consecutive tests from 2023 to 2025 — this suggests the component has not been replaced and is progressively worsening. Get underneath the car and check for live oil weeping rather than just surface residue. The nearside front anti-roll bar linkage ball joint was noted as 'excessively worn' at the recent failure, so this joint should be physically checked for play with the wheel loaded.

The exhaust emission failure on both 2024 and 2025 tests is a recurring concern and warrants a diesel-specific health check. Causes could include a clogged diesel particulate filter (DPF), EGR valve issues, or worn injectors — all common and costly on a high-mileage HDi. The split CV boot noted in November 2025 must be replaced immediately; check the joint itself for gritty play, as once contaminated, the entire drive shaft may need replacement. Also inspect the rear brake discs (noted as pitted in 2023) and verify they have been machined or replaced since. A thorough test drive should include checking for clutch slip, turbo whistle, and any EML illumination on the dashboard.