2005 Audi A4 1.9L Diesel · AD05 CSZ

This 2005 Audi A4 presents a roadworthiness history dominated by a cluster of brake hose, tyre integrity, and corrosion advisories concentrated around the 2021 to 2022 testing period, with the 2022-04-25 pass being achieved only after a prior failure two days earlier which flagged both rear brake hoses as excessively deteriorated. The 2022 MOT campaign is particularly telling: a March 2022 test resulted in dangerous failures for both nearside front and offside rear tyres due to structural separation with exposed cords, alongside a non-functional offside front headlamp on dipped beam and a noted engine oil leak. Within five weeks, two further attempts were needed before the vehicle passed, leaving persistent advisories for offside front wheel arch corrosion and a perishing nearside rear tyre. Earlier tests in 2021 also surfaced a fractured offside rear coil spring, a dangerous rear tyre bulge, and front tyres worn close to the legal limit on both edges. The intervening years, by contrast, were quieter: the 2017, 2016, and 2015 tests all passed with advisories centred on brake disc pitting and scoring, windscreen damage, exhaust corrosion, and an offside rear coil spring showing surface corrosion. The record therefore shows a vehicle that has not been in chronic mechanical decline but has accumulated a predictable spread of age-related wear, with brake and tyre items recurring as the dominant concern in the most recent active testing years. The recorded odometer reading of 234,018 miles against a 2005 registration equates to approximately 11,144 miles annually over 21 years, which is broadly consistent with typical average usage for a car of this age. However, the testing timeline reveals significant gaps: no MOT history is recorded between August 2017 and February 2021, a span of nearly three and a half years, followed by another gap from April 2022 to the present. These extended silences in the record may indicate periods off the road, possibly SORN, or simply untested operation. From a mechanical standpoint, an annual accumulation near the national average suggests consumables such as brake discs, pads, tyres, and suspension components have been worked through their expected service life more than once, and the recurring advisories for brake disc wear, coil spring fracture, and tyre deterioration align with this mileage profile. The noted engine oil leak, if progressive, becomes more pressing at this odometer reading given the age of associated seals and gaskets. For a prospective buyer, the priority mechanical items to investigate are the rear brake hydraulic system and the front and rear suspension, both of which have produced recent defects. The 2022 advisories recorded both rear brake hoses as excessively deteriorated, a condition that compromises pedal feel and braking efficiency under load and warrants a thorough inspection of all four brake hoses and the rigid brake lines along the underbody and subframe for corrosion, particularly where salt and moisture collect. On a test drive, the buyer should listen for any sponginess or excessive travel in the brake pedal, uneven pulling to one side under heavy braking, and any binding or grabbing sensation from the rear calipers that may indicate seized slider pins following hose deterioration. The fractured offside rear coil spring recorded in 2021 is a known failure point on B7-platform A4s, often accompanied by fractured spring seats or top mounts, so the vehicle should be raised and the springs, dampers, and top mounts examined for cracks, corrosion, and any sagging that would suggest weakened springs. The persistent advisories for offside front wheel arch corrosion and the 2017 note of a corroded offside rear coil spring together point to broader chassis and underbody corrosion that demands close physical inspection on a ramp or over a pit. The buyer should look for bubbling or perforation along the wheel arches, sills, suspension turrets, subframe mounting points, and around the fuel filter and battery tray areas, all of which are known corrosion hotspots on this generation of A4. The engine oil leak recorded in 2022 should be traced to its source, typically the cam chain tensioner gasket, valve cover gasket, or rear main seal on these engines, and any evidence of oil residue on the underside or a burning smell under load would suggest the leak is active rather than historical. Finally, given the dangerous tyre failures in early 2022, all four tyres and the spare should be inspected for age, sidewall cracking, and tread depth, and the buyer should test for any vibration through the steering wheel or excessive road noise that might indicate distorted or improperly seated replacements.