2006 Mercedes-Benz CLK 3.0L Diesel · GU06 AAJ

The most recent MOT test on 2025-08-19 confirms the vehicle remains roadworthy, yet the immediate preceding history reveals a concerning pattern of repeated failures in early 2024. Two consecutive failures in May and July of that year—spaced just six days apart—before a swift pass in August, suggests either a prolonged diagnostic process or unresolved underlying issues. The absence of recorded defects in any test, however, implies the failures may have been procedural or related to minor, easily rectified items rather than structural or safety-critical faults. The latest pass, just under a year ago, means the vehicle has not undergone a formal inspection since, leaving 3,224 miles of unchecked usage. While the lack of defects in prior tests suggests no catastrophic failures, the repeated failures in 2024 warrant scrutiny of whether critical components were overlooked or if the tester’s focus was on non-safety items. The mileage progression of roughly 4,887 miles per year is unusually low for a vehicle of this age, particularly given the 2006 model’s typical wear patterns. The gap between the 2023 pass at 91,634 miles and the first 2024 failure at 94,494 miles—just 2,860 miles in under eight months—indicates either extended periods of inactivity or very light usage. The subsequent rapid accumulation of 434 miles between the two 2024 failures suggests the vehicle was driven shortly before each test, yet no defects were logged. This pattern could imply the owner prioritised short-term compliance over thorough maintenance, or that the vehicle was stored for prolonged periods before brief test runs. The low mileage does not necessarily equate to better condition, as standing vehicles are prone to suspension corrosion, battery drain, and fluid degradation. Given the repeated MOT failures in early 2024, a buyer should prioritise an independent inspection of the braking system, suspension alignment, and exhaust integrity. The double failure in quick succession hints at potential issues with brake binding, caliper seizure, or uneven wear that may not have been fully addressed. Suspension bushes and coil springs, often overlooked in low-mileage vehicles due to standing corrosion, should be examined for stiffness or cracking. The absence of recorded defects does not preclude hidden corrosion in wheel arches, subframes, or exhaust supports, particularly given the vehicle’s age. Additionally, the lack of recent MOT history means critical fluids—brake fluid, power steering, and differential oil—could be degraded or contaminated. A pre-purchase inspection should include a thorough check of these components, as well as tyre condition and alignment, to ensure no latent issues exist beyond the MOT’s scope.