2016 Mercedes-Benz CLA 2.1L Diesel · YA66 SHG

A fractured rear coil spring presented itself at the January 2026 test, forcing a failure that was subsequently remedied within ten days and recorded as a pass, indicating the repair was completed and reinspected within a short window. The fractured nearside rear upper coil spring is a structural and safety-critical failure rather than a minor advisory, and the fact that the vehicle only just cleared on the retest suggests the component had reached the end of its service life. Windscreen damage has also been a recurring feature, flagged as a minor in 2022 and again in January 2026, though on both occasions it was deemed not to adversely affect the driver's view. Front brake pads were noted as wearing thin at both January 2026 entries, and alongside the suspension failure, this points to consumable and chassis wear beginning to accumulate as the car reaches its tenth year. Prior to 2026 the record was notably clean, with five consecutive passes between 2019 and 2024 carrying no recorded advisories on the 2021, 2023 and 2024 tests, so the recent cluster of defects represents a clear shift in the vehicle's mechanical trajectory rather than a long-standing pattern. At 60,677 miles over a ten-year span, this CLA has averaged roughly 6,068 miles annually, which is broadly consistent with typical private use for a vehicle of its type. There are no extended gaps in the MOT testing record, with annual tests carried out consistently from 2019 through to January 2026, suggesting the car has remained in regular use rather than being laid up for any significant period. The mileage progression is steady rather than erratic, with no evidence of rapid accumulation between tests that might indicate motorway mileage or commercial use, and equally no sign of long stationary periods that often produce issues with seized brakes, deteriorated rubber components and discharged batteries. The current odometer reading therefore aligns with a car that has been driven moderately throughout its life, which is generally positive for avoiding the worst effects of either high-mileage wear or prolonged inactivity. The 2020 test noting the vehicle as a low emitter and being covered underneath does not in itself indicate any mechanical concern, simply reflecting the configuration of the inspection at that appointment. For a prospective buyer, the fractured coil spring warrants close attention to the remaining suspension geometry. Coil spring failures on the rear axle of this generation of Mercedes-Benz CLA and A-Class are not uncommon as the vehicles age into their second decade, and the offside rear upper coil spring should be inspected with the same level of scrutiny as the nearside, as paired failures frequently occur. On a test drive, listen for clonking or knocking noises from the rear suspension over uneven surfaces, pay particular attention to any settling of the rear corner on one side, and check that the vehicle sits level rather than leaning. The rear dampers and top mounts should also be examined for any signs of fluid leakage or perishing, as the forces released by a snapping spring can damage adjacent components. Given the front brake pad advisory, a thorough inspection of pad and disc condition is essential, with attention to any scoring on the disc surface, uneven pad wear, or any binding sensation through the pedal that could indicate a sticking caliper. Test the brakes firmly from higher speeds to check for pull to either side and listen for any grinding or squealing that would suggest the pads have worn further since the advisory was issued. The persistent windscreen damage should also be examined in person, as a minor categorisation at test only confirms that the driver's view is not currently compromised, but the damage may have progressed since the January 2026 inspection. Check carefully for any cracking radiating from impact points, particularly across the swept area of the wipers or near the sensor housing for the lane keeping or rain sensing systems, as further deterioration could quickly escalate the categorisation. The rear tyres flagged for cracking and perishing in 2022 should be confirmed as replacements have been fitted since, with current sidewalls inspected for any renewed signs of rubber deterioration, especially on cars of this age where sidewall flexing over a decade of use can produce fine cracks. Finally, given the vehicle's age and the recent emergence of chassis and brake wear, a pre-purchase check on the condition of the rear subframe mounting points, anti-roll bar bushes and lower suspension arms would be prudent, as corrosion or bush deterioration in these areas is typical of Mercedes-Benz products of this era entering higher mileage brackets.