2022 Mercedes-Benz C 300 AMG Line Prem + Mhev A 2.0L Hybrid electric · OO17 BAL

The most recent DVSA MOT test on 25 August 2026 resulted in a pass for this 2022 Mercedes-Benz C 300 AMG Line Premium Plus MHEV, which is a positive indicator of its overall roadworthy condition. However, the test did record an advisory concerning the front inner brake discs, noting wear although not yet at an excessive level. With only two MOT entries on file and just one mechanical advisory, the maintenance trend appears broadly stable rather than deteriorating, though the brake component will require ongoing monitoring as the vehicle continues to age. The advisory under the previous test in August 2025 was limited to a non-mechanical observation regarding an undertray being fitted, which is a common modification and carries no direct mechanical significance. With a recorded mileage of 34,153 miles over approximately four years, this C 300 has covered around 8,538 miles annually, which sits squarely within typical usage parameters for a premium executive saloon of this vintage. There are no significant gaps in the mileage record or evidence of rapid accumulation that would suggest heavy commercial or motorway use, nor is the mileage so low that prolonged standing periods become a primary concern. That said, the annual average still represents meaningful real-world use, and components subject to friction and thermal cycling such as brake discs, pads, tyres, and suspension bushes will have experienced a proportionate level of wear. The mild hybrid electrical assistance system adds a layer of complexity that warrants particular attention to its 48V battery and associated control modules, although these would not typically be assessed during a standard MOT. Given the advisory on the front inner brake discs, a prospective buyer should conduct a focused inspection of the braking system during any test drive. Listen for any scraping, grinding, or metallic noises when applying the brakes, and pay attention to any vibration or shudder through the steering wheel or brake pedal, as these can indicate disc runout or uneven wear progression. Check the brake fluid condition and service history, as Mercedes-Benz specifies brake fluid replacement at regular intervals regardless of mileage, and verify that the brake caliper sliders are free to move without binding. The discs themselves should be measured for remaining thickness against the manufacturer's minimum specification, and the inner faces in particular should be examined for lipping or corrosion pitting, since the advisory specifically referenced inner disc wear. Beyond the braking system, several age-related items merit careful physical inspection regardless of the generally favourable MOT history. Tyres should be checked for sidewall cracking or perishing from age, as rubber compounds deteriorate over time even with adequate tread depth, and the production date codes on the sidewalls should be reviewed. The 12V battery, which is critical for the mild hybrid system's control electronics, should be tested for state of health, particularly if the original unit is still fitted. Coolant, transmission fluid, and differential oil should all be confirmed as being within their manufacturer-recommended service intervals, as calendar-based degradation occurs regardless of mileage. The vehicle should also be inspected from underneath for any signs of fluid weeping from the mild hybrid components, the suspension should be tested for any clonks or knocks over speed humps and uneven surfaces, and the service book should be examined to confirm that all required Mercedes-Benz scheduled maintenance has been carried out at the correct intervals using approved parts and fluids.