2022 Renault Unknown 2.3L Diesel · DX22 AEU

The most recent MOT, conducted on 13 August 2026, resulted in a pass but recorded three advisories: a minor oil leak, a developing condition on the off‑side rear outer tyre, and a slightly defective off‑side front lower headlamp reflector. The previous test, a year earlier, also passed but highlighted a severely deteriorated outer CV boot on the off‑side front drive‑shaft joint and an advisory concerning items removed from the driver’s view. The pattern shows a gradual emergence of wear‑related issues rather than a reversal of previous faults, indicating that the vehicle’s maintenance condition is beginning to decline and will require attention to prevent escalation. At four years old the odometer reads 149,329 miles, equating to roughly 37,300 miles per annum – well above the typical UK average of 10‑12 000 miles per year. Such a high annual accumulation suggests the engine, transmission and ancillary components have been subjected to intensive use, accelerating wear on consumables such as clutch plates, timing belt or chain, and oil‑filter service intervals. The mileage also implies that the suspension bushings, coil springs and steering rack are likely to be approaching the end of their service life, and that brake discs and pads may be nearing replacement thresholds. Any sudden loss of power, excessive engine noise, or harsh braking should be investigated promptly. When inspecting the vehicle, give particular focus to the off‑side front CV joint. A severely deteriorated outer boot can allow grit and moisture to enter, leading to joint wear and a characteristic clicking or clunking noise on acceleration or when turning. Verify that the boot has been replaced or is in good condition and check the joint for any play. The oil leak advisory, although classified as non‑excessive, should be traced to its source – whether a valve cover gasket, oil filter housing or oil cooler line – and the area beneath the car inspected for fresh oil deposits, which could indicate a developing seal failure. Examine the off‑side rear outer tyre for cracking, tread separation or bulging; perishing sidewalls are a safety risk, especially at the high mileage and likely higher tyre wear rates, and the tyre may need replacement even if the tread depth appears acceptable. Beyond the recorded defects, a comprehensive pre‑purchase check should include a visual inspection of all tyres for age‑related cracking, as rubber can degrade after six years regardless of tread wear. Confirm the condition of the 12 V battery, looking for corrosion on terminals and testing voltage under load, since a high‑mileage, frequently used vehicle may have been subjected to short trips that can weaken the charge cycle. Inspect the brake discs for surface rust, scoring or uneven wear, and ensure the calipers move freely without binding. Finally, verify that the service book shows regular oil changes, timing belt or chain service (if applicable) and that all fluid reservoirs – brake, coolant, power‑steering and transmission – are topped up and free from contamination, as time‑based degradation can be as critical as mileage‑driven wear.