2008 Audi A4 3.0L Diesel · RF08 BWN

The most recent DVSA examination on 15 November 2024 resulted in a pass, with two advisories issued for a corroded rear sub-frame and a non-excessive engine oil leak, alongside a minor windscreen damage note. However, this pass followed a fail on 9 September 2024, which raises a degree of concern. The previous test had flagged major defects including a split offside front CV joint boot, a worn steering rack universal joint with excessive free play, and the same recurring advisories for rear sub-frame corrosion and engine oil leakage. Prior to that, the September 2023 test was also a fail, recorded as dangerous for rear brake pads being below 1.5 mm, with additional major items including a non-functioning offside headlamp on both dipped and main beam and a loose offside front driveshaft securing bolt. The overall maintenance trend suggests a vehicle that has had a number of significant safety-related defects rectified over a relatively short period, and the recurrence of the sub-frame corrosion and oil leak advisories across consecutive tests indicates these areas warrant close monitoring and may require further attention beyond the advisory thresholds. The recorded mileage of 198,903 miles over approximately 18 years equates to around 11,050 miles per year, which is broadly typical for a car of this age. The MOT history shows reasonable continuity, with annual tests recorded in 2017, 2018, 2019, 2020, 2023 and 2024, though there is a notable gap between the December 2020 test and the September 2023 test. This three-year absence from testing could indicate either a period of off-road storage or simply that testing was not undertaken, and either scenario carries mechanical implications such as calendar-based fluid degradation, brake disc corrosion from standing, and accelerated ageing of rubber components including tyres, hoses and bushes. Given the recurring rear sub-frame corrosion advisory, a prospective buyer should carry out a thorough underbody inspection, ideally with the vehicle raised on a ramp, paying particular attention to the rear sub-frame mounting points, suspension arms, and surrounding structural areas. Any visible flaking, pitting, or perforation beyond surface oxidation should be professionally assessed, as corrosion in this region can progress to the point of MOT failure and potentially compromise structural integrity. The repeated engine oil leak advisory also warrants investigation; an inspection should look for oil residue around the sump, cam chain area, valve cover gasket, and turbo or oil cooler pipes if fitted. On a test drive, listen for any engine tapping or rattle on startup which might suggest degraded oil pressure, and watch the oil level on the dipstick over the course of a few days to determine whether the leak is worsening. The 2023 dangerous failure for rear brake pads below 1.5 mm indicates that brake wear has been a notable concern, and although the pads were evidently replaced, the discs may also have been marginal at that point. The advisories for front suspension arm pins and bushes in 2017 and 2018, together with the recent steering rack UJ wear, suggest the front end has had ongoing wear issues. On a test drive, listen for any clonks or knocks from the front suspension over speed humps and uneven surfaces, and feel for vagueness or play in the steering, particularly around the straight-ahead position, which would suggest further steering or rack deterioration. Given the age and mileage, additional checks should include the condition of the cam belt or timing chain service history, as these engines are sensitive to timing component wear at high mileage, the age and health of the 12V battery, brake fluid and coolant which degrade with calendar age regardless of mileage, and the tyres, as the recorded advisories show a history of front and rear edge wear, which can point to suspension geometry issues such as worn bushes or tracking misalignment. A pre-purchase inspection by an independent Audi specialist would be strongly advisable to assess the full mechanical condition, particularly given the vehicle's mileage and the pattern of advisories across the MOT history.