2012 Mercedes-Benz CLS 2.1L Diesel · LD62 FDG

A 2012 Mercedes-Benz CLS showing 111,734 miles on the odometer presents a notably thin DVSA test history, with the most recent recorded activity dating back to September 2021. On that date the vehicle is listed as both passing and failing, an administrative inconsistency that warrants clarification with DVSA but which, taken at face value, suggests the car has not been presented for an MOT for roughly five years. This prolonged absence from testing is a significant red flag for any prospective buyer, because it means there is no recent official verification of brake efficiency, tyre condition, suspension integrity, exhaust emissions, or structural corrosion. On a premium executive saloon of this vintage and mileage, such a gap almost certainly conceals unrecorded wear across the multi-link front and rear suspension, the air suspension components if fitted, the braking system, and the underbody structure, all of which are typical MOT failure points for high-mileage Mercedes chassis. The recorded mileage of 111,734 miles across approximately fourteen years equates to an annual accumulation of around 7,981 miles, which sits broadly in line with average usage for a vehicle of this age. However, this figure must be interpreted cautiously given the absence of recent tests, as the true current odometer reading cannot be verified against MOT records since September 2021. Any mileage presented by the seller should therefore be cross-checked against the V5C logbook, service invoices, and any in-vehicle digital records. The combination of moderate historical mileage with a multi-year testing gap is mechanically concerning, because standing periods are particularly damaging to complex chassis components. Coil springs can settle or fracture, air suspension struts can develop leaks and compressor failure, brake discs and calipers can seize through corrosion, rubber bushes in the control arms can harden and crack, and underbody sealing can degrade, allowing moisture ingress to initiate subframe and brake pipe corrosion. A thorough physical inspection is essential, beginning with a cold start to listen for timing chain rattle, which is a known weakness on the OM642 diesel and M276 petrol engines commonly fitted to the CLS of this era, and continuing with a careful walkaround for signs of accident repair, panel mismatch, or rust along the wheel arches, sills, and lower door edges. On the test drive, pay close attention to any clonks or creaks from the front suspension over speed humps and uneven surfaces, as these typically indicate worn lower control arm bushes, thrust arm bushes, or anti-roll bar links, all of which are recurring advisories on Mercedes of this generation. Steering should remain precise and self-centring without vibration through the wheel, which would point to imbalanced or worn brake discs or front suspension geometry issues. The brake pedal should feel firm and progressive without excessive travel, and any judder under braking or pulling to one side suggests seized caliper slides or warped discs, both common after long periods of light use. Finally, place the vehicle on a ramp or use a good inspection pit to assess the underbody directly. Look closely for corrosion on the front subframe mounting points, the rear axle carrier, and the brake pipes, paying particular attention to the fuel lines and any underbody wiring looms for oil contamination, which is typical of the higher-mileage Mercedes V6 and V8 units. Examine all four shock absorber or air spring assemblies for any signs of oil misting or hydraulic leakage, and check that the air suspension compressor, if fitted, operates quietly without extended cycling on startup. The exhaust system should be inspected for corrosion at the mounting brackets and joints, and the catalytic converter area checked for warning signs of removal or replacement with non-OE components. Given the gap in MOT history, budgeting for a comprehensive service including brake fluid, coolant, transmission fluid, and a full suspension refresh would be prudent, as these items are all well overdue on a vehicle of this age and standing time.