2017 Mercedes-Benz CLS 2.1L Diesel · KT17 ABO

The latest MOT test for this 2017 Mercedes-Benz CLS, conducted on 2025-12-31, resulted in a passing grade with three minor defects and three advisories, indicating that the vehicle remains roadworthy but requires attention to specific areas. The maintenance history over the past four years shows a stable trend, with no failures or repeated severe issues, though the presence of consistent advisories—particularly the near-side front suspension arm pin or bush wear and rear tyre edge wear—suggests gradual wear progression rather than sudden deterioration. The lack of repeated failures in the same categories since 2023 implies that while maintenance is advised, the vehicle’s structural and functional integrity remains intact for the time being. The advisory regarding the axillary battery malfunction light is notable but does not currently pose an immediate risk; however, it warrants closer monitoring, as battery health can degrade over time, especially in a vehicle of this age. The recorded mileage of 66,515 miles for a nine-year-old CLS reflects a moderate annual usage rate of approximately 7,391 miles per year, which is within the expected range for a vehicle of this class. Such usage suggests a balance between regular driving and periods of inactivity, which can influence wear patterns. The absence of significant mileage gaps or rapid accumulation over the past few years indicates that the vehicle has likely been driven consistently, though prolonged standing—particularly in the early years—could have contributed to minor corrosion or fluid degradation in static components. For example, standing brakes may have caused corrosion on brake discs or binding calipers, and static fluids like brake fluid or coolant could have experienced time-based degradation, even if mileage is moderate. Given the advisories and maintenance history, the prospective buyer should conduct a thorough inspection of the suspension system, focusing on the near-side front suspension arm and bushings. Listen for unusual clunking or rattling during cornering or over bumps, as this may indicate excessive movement or bush wear. Visually inspect the suspension arms for signs of excessive play or damage, and check for oil leaks around the bushings. The rear tyres, particularly the near-side, show edge wear, which could suggest underinflation, alignment issues, or excessive camber angles. During a test drive, monitor tyre grip and alignment, noting any uneven wear patterns or vibrations that may indicate misalignment or suspension misbehaviour. Additionally, the axillary battery advisory prompts a check of the 12V battery and associated wiring for corrosion, loose connections, or signs of failure, as this could affect electrical systems and overall reliability. For the buyer, a comprehensive physical inspection is essential, especially given the vehicle’s age and the advisories present. Start with the tyres, checking for sidewall cracking or perishing, which can occur from prolonged exposure to UV light and age-related degradation. Verify tyre pressure and tread depth, ensuring they meet legal and safety standards. Inspect the brake system for signs of corrosion on discs or binding calipers, particularly if the vehicle has been stationary for extended periods. Check the fluid levels and condition of the brake fluid, coolant, and engine oil, as time-based degradation can lead to reduced performance or system failure. The suspension should be examined for signs of wear on bushes, springs, and control arms, with particular attention to the near-side components. Finally, verify that all service records are up to date, including timing belt replacement (if applicable) and fluid servicing, as these are critical for long-term reliability. If the vehicle has been used sparingly, a more rigorous inspection of the engine bay for corrosion or leaks is advisable, as standing fluids can accelerate wear in static conditions.