2016 DS DS3 1.6L Diesel · BX16 AAO

The most recent MOT test on the 2016 DS3 occurred on 2025-10-21, where the vehicle passed with two persistent advisories: an oil leak that remains moderate in severity and an offside front tyre with superficial cuts that do not compromise the tyre’s structural integrity. However, the preceding MOT on the same date revealed a failure due to three major defects—two related to non-functioning dipped beam headlamps and a non-functional near-side front position lamp—indicating a pattern of recurring electrical issues. The earlier failed test also included the same advisories, alongside a critical failure of the near-side front constant velocity (CV) joint boot, which has been compromised, allowing contaminants to enter the joint. This suggests a trend of recurring mechanical and electrical faults, with the CV joint failure being particularly concerning as it may lead to accelerated wear on the drive shaft and potential drivetrain misalignment if not addressed promptly. The vehicle’s recorded mileage of 84,411 miles for a ten-year-old DS3 represents an average annual usage of approximately 8,441 miles, which is consistent with typical driving patterns for this age group. While this mileage is not exceptionally high, it does not necessarily indicate excessive wear beyond what is expected for a well-maintained vehicle of this age. However, the presence of an oil leak and recurring advisories on brake discs—both near-side and offside rear—suggests that the engine bay and braking systems have been subjected to prolonged stress. The CV joint failure further implies that the drivetrain components have been exposed to wear from frequent or aggressive driving, particularly if the boot was previously repaired or replaced. Buyers should be mindful that such recurring issues may indicate underlying mechanical fatigue or a lack of proactive maintenance in critical areas. Given the MOT history, the prospective buyer should conduct a thorough inspection of the oil leak source, focusing on the engine bay for signs of oil seepage around the oil pan, valve cover, or oil filter housing gasket. The oil leak could stem from a worn oil seal, cracked gasket, or failing oil pump, all of which may require replacement to prevent further contamination of the engine oil. During a test drive, listen for unusual noises from the CV joint area, such as whining or grinding, which could indicate internal wear or misalignment. If such noises are present, the CV joint should be inspected for signs of excessive play or damage to the boot, and the drive shaft should be checked for alignment and balance to avoid excessive stress on the joint. In addition to the mechanical concerns, the buyer should verify the condition of the brake system, particularly the near-side and offside rear discs, which have shown signs of wear and pitting. Inspect the discs for signs of excessive heat damage, warping, or glazing, which could lead to reduced braking performance or premature failure. Listen for any unusual braking noises, such as squeaking or grinding, which may indicate worn brake pads, warped discs, or binding calipers. The front position lamp and dipped beam headlamps should also be tested to ensure they function correctly, as the previous MOT failures highlight potential electrical issues. For the tyres, despite the minor cuts on the offside front tyre, the buyer should check for signs of uneven wear patterns, which could indicate alignment or suspension issues. Finally, given the vehicle’s age, consider a visual inspection of the tyre sidewalls for signs of cracking or perishing, which can weaken the tyre structure over time. A comprehensive check of the 12V battery and starter motor is also advisable, as prolonged periods of disuse or electrical drain can lead to battery failure or related electrical problems. If the vehicle has been stored for extended periods, ensure that the battery is fully charged and that all fluids, including brake fluid and coolant, are topped up to prevent degradation from standing.