1998 Peugeot 406 1.9L Diesel · S957 ADO

A 1998 Peugeot 406 approaching nearly three decades of age is naturally a vehicle where corrosion and component fatigue become dominant themes, and this particular MOT history reflects exactly that pattern. The most recent test on 5 March 2026 returned a Pass, but only ten days earlier it had failed, and both tests carried an identical set of advisories covering three tyres worn close to the legal limit on their edges, slight corrosion to the offside front wing, and notably excessive handbrake travel. The recurrence of identical advisories across a re-test suggests that the corrective work between those two visits was minimal or did not address the advisory items, which on a car of this age often points to budget-driven corner cutting rather than any single isolated fault. Looking further back, a Major defect was recorded on 25 February 2025 for exhaust emissions exceeding the metered smoke limit for a turbocharged engine, alongside the first appearance of rear subframe corrosion and a nearside oil leak. By March 2024 the subframe corrosion and oil leak were already on the record, joined by a coolant leak from the radiator and a non-functioning upper stop lamp. The cumulative picture is of an aging vehicle where structural corrosion, fluid leaks, and emissions compliance are all under simultaneous pressure, and where the advisory list has remained largely unchanged from year to year rather than being progressively cleared. The recorded mileage context is not available, and with only four tests captured over what appears to be roughly a two-year window of activity, there is insufficient data to draw firm conclusions about annual mileage accumulation. However, the fact that the vehicle has been presented for MOT testing annually in recent years and that advisories have remained broadly consistent suggests it is in active use rather than laid up, which on a 1998 car is itself a notable indicator given the survival rate of vehicles of this vintage. Without odometer readings to compare against the vehicle age, the mileage-based mechanical implications cannot be properly assessed, but the buyer should be aware that older Peugeots of this era, particularly the diesel variants which the turbocharged emissions failure suggests this may be, are susceptible to age-related deterioration of turbo systems, injector seals, and engine mounting points regardless of mileage. Given the recurring rear subframe corrosion advisory first noted in 2024 and repeated in 2025, this is the single most important area to inspect physically on any viewing. Subframe corrosion on the 406 platform is a known issue and can progress from advisory to failure if left unmonitored, so a thorough examination from underneath using a torch is essential, paying particular attention to the mounting points and any signs of distortion or perforation around suspension pick-up points. On the test drive, listen for clonks or knocking from the rear suspension over uneven surfaces, which would indicate that bushes or the subframe mountings have deteriorated beyond the advisory stage. The handbrake travel advisory repeated on both 2026 tests, combined with the lack of any brake-related advisories on the friction components themselves, suggests the issue is likely cable adjustment or rear caliper mechanism wear rather than pad or disc condition, but it warrants checking that the handbrake holds firmly on an incline and that the lever does not require excessive pulls before bite. The persistent nearside oil leak, the coolant leak from the radiator flagged in 2024, and the turbocharger smoke failure all point to an engine bay that needs careful scrutiny. On a cold start, observe whether blue or grey smoke is visible from the exhaust, which would confirm that the emissions issue flagged in February 2025 has not returned or worsened. Check the underside and engine bay for fresh oil residue and coolant staining, particularly around the radiator hoses, water pump area, and the turbocharger if fitted. The tyre wear pattern noted across multiple tests, with both front and rear tyres wearing on their edges, is consistent with either alignment geometry issues or worn suspension bushes causing tracking problems, and a test drive should include checking for steering pull to one side or a vague, wandering feel that would confirm geometry concerns. Finally, the offside front wing corrosion and the taped-up offside wing noted in 2025 are cosmetic but worth inspecting for any underlying rust that may have spread into the inner wing structure or A-pillar base.