2004 Ford Focus 1.6L Petrol · AD04 HGG

A clear pattern of corrosion-related advisories across the suspension, subframe, and structural mounting areas emerges as the defining mechanical theme of this 2004 Ford Focus. The most recent test on 14 January 2022 was a pass, but it carried advisories for corroded rear coil springs, a worn offside front anti-roll bar linkage pin or bush, an illuminated engine management lamp, and a deteriorated rear registration plate, indicating that the underlying wear trajectory has not halted. Looking further back, the record shows two failures within the dataset, both involving major defects: a 2022 failure for an incompatible front headlamp light source, a perished offside front CV joint boot allowing dirt ingress, and a major exhaust gas leak, alongside a 2020 failure for an inoperative engine management indicator, an excessively worn offside front anti-roll bar linkage ball joint, and an insecure rear exhaust mounting. Multiple tests from 2018 through 2022 have consistently flagged corrosion to rear suspension mounting prescribed areas, trailing arm mountings, the rear subframe, and upper Macpherson strut mountings, suggesting a progressive structural deterioration rather than an isolated cosmetic issue. With 115,977 miles accumulated over approximately 22 years, the vehicle has averaged around 5,272 miles annually, which is notably low for a car of this vintage. The recorded tests span from January 2018 to January 2022, with several consecutive annual tests and no obvious multi-year lay-up gaps within this window, although the absence of any recorded test between January 2022 and the present date in 2026 suggests the vehicle may have been off the road, lightly used, or simply not presented for testing during that interval. Low annual mileage of this nature typically reduces wear on high-mileage consumables such as the clutch, drivetrain, and internal engine components, but it does not arrest the progression of corrosion to ferrous components, and standing periods can actually accelerate oxidation of unprotected suspension and underbody parts, particularly in climates where road salt is used. A prospective buyer should focus their physical inspection on the specific suspension components that have been repeatedly flagged. The anti-roll bar linkage wear noted on both the 2020 failure and the 2022 advisory is a known Focus weakness, and during a test drive any knocking or rattling over uneven road surfaces, particularly from the front end, should be taken seriously as it may indicate deteriorated bushes or ball joints that have moved beyond the advisory threshold. With rear coil spring corrosion and subframe corrosion advisories spanning multiple years, the vehicle should be raised on a ramp if possible to inspect the rear trailing arm mounting areas, the subframe itself, and the spring seats for any visible flaking, section loss, or advanced scaling that could compromise structural integrity at the next MOT. The upper Macpherson strut mounting corrosion, flagged on both sides in 2021, warrants a check for knocking from the front suspension over bumps and uneven tyre wear, which can result from compromised strut top mounts allowing camber misalignment. The illuminated engine management lamp recorded as an advisory in both the 2022 pass and the 2022 failure is a separate concern that warrants diagnostic interrogation rather than dismissal, as the 2020 failure specifically identified the MIL as inoperative or indicating a malfunction, meaning an active fault code was once recorded as a major defect. Oil leakage from the engine was also noted as an advisory in both 2020 tests, so the underbonnet and underbody should be inspected for fresh oil residue, particularly around the cam cover, sump, and front crankshaft seal area. Given the major exhaust leak and insecure exhaust mounting recorded in 2020 and 2022, the full exhaust system including the manifold, downpipe, and rear mounting rubbers should be checked for blow-by sounds at idle, visible soot trails at joints, and any movement of the rear silencer or back box when physically manipulated. Finally, the perished CV boot flagged as a major in 2022, the worn tyres noted in 2018 and 2021, and the front headlamp compatibility issue should all be confirmed as rectified on any example being considered, as these items have a direct bearing on the vehicle's immediate roadworthiness.