2016 Mercedes-Benz CLS 3.0L Diesel · ET65 ACZ

The most recent DVSA MOT test for this 2016 Mercedes-Benz CLS was conducted on 2026-03-05, resulting in a passing outcome, though it follows a pattern of two consecutive failures in the preceding months—specifically on 2026-03-05 and 2025-02-10—neither of which recorded any mechanical defects. The overall maintenance trend appears inconsistent, with no clear improvement or deterioration over the past year. The vehicle’s MOT history suggests potential underlying issues that may not have been flagged during routine checks, warranting closer inspection of critical systems such as the suspension, brakes, and exhaust emissions control. The presence of failures without recorded defects implies that the car may be encountering intermittent or subtle mechanical anomalies, which could escalate if left unaddressed. A thorough pre-purchase inspection would be prudent to identify any latent wear or component fatigue that might not surface during standard MOT testing. The recorded mileage of 100,222 miles for a vehicle aged ten years represents a moderate annual usage rate of approximately 10,022 miles per annum, which is within the expected range for a car of this age and class. However, the mileage data does not reveal any extreme patterns of rapid accumulation or prolonged periods of inactivity, which could otherwise indicate either excessive wear or prolonged standing-related corrosion. Given the typical wear progression at this stage, the suspension components—such as the coil springs, shock absorbers, and suspension bushes—are likely experiencing moderate to advanced wear, particularly in the rear axle area where Mercedes-Benz CLS models often develop bush degradation over time. Brake systems, including discs, pads, and calipers, may also show signs of thinning or uneven wear, especially if the vehicle has been driven at higher speeds or subjected to aggressive braking. The drivetrain, including the transmission and differential, should be checked for fluid leaks or excessive play, as these areas tend to accumulate wear more rapidly at this mileage. Given the absence of recorded defects in the MOT history but the presence of two failures without specific findings, the buyer should prioritise a comprehensive mechanical inspection. Focus on the suspension system, particularly the rear subframe and its associated bushes and ball joints, for signs of excessive play, clunking noises during cornering, or uneven tyre wear that could indicate misalignment or worn struts. The brakes should be examined for binding calipers, warped discs, or uneven pad wear, with particular attention to the front brakes where Mercedes-Benz models often develop corrosion or binding issues from prolonged standing. Listen for any unusual grinding, squeaking, or rattling during the test drive, which could indicate failing components such as exhaust manifold seals, exhaust flex joints, or worn suspension linkages. Additionally, check for fluid leaks under the vehicle, particularly around the oil pan, transmission fluid reservoir, and coolant hoses, as these could signal impending mechanical failure. For a vehicle of this age and mileage, the buyer should also conduct a visual and functional inspection of the tyre condition, ensuring there are no signs of sidewall perishing or cracking, which can weaken the tyre structure over time. Inspect the 12V battery and associated electrical connections for corrosion or loose terminals, as older vehicles are more susceptible to electrical gremlins from prolonged inactivity. The engine oil and transmission fluid should be checked for contamination or degradation, with a recommendation to replace them if they are more than 60,000–80,000 miles old or if they appear dark, burnt, or sludge-filled. Finally, verify that the service book or maintenance records are up to date, particularly for the timing belt (if applicable), spark plugs, and fluid top-ups, as these are critical for preventing catastrophic failures at this stage of the vehicle’s life. If the car has been stored for extended periods, a thorough inspection of the exhaust system for rust or leaks, and the fuel system for moisture or contamination, is essential to avoid future emissions-related failures.