2025 Mercedes-Benz C 300 AMG Line Premium Mhev A 2.0L Hybrid electric · GD74 TBU

No MOT test results have been recorded against this vehicle on the DVSA database, which is consistent with its registration year of 2025. Under current UK roadworthiness legislation, a vehicle does not require an MOT test until it reaches three years of age, meaning this Mercedes-Benz C 300 AMG Line Premium MHEV would not be due for its first statutory inspection until 2028. The absence of any test history therefore reflects the vehicle's youth rather than any oversight or compliance issue, and it offers no empirical evidence regarding the car's ongoing mechanical condition, recurring defect patterns, or maintenance trajectory. A prospective buyer should treat the lack of MOT data as neutral and rely instead on the manufacturer's warranty cover, the supplying franchised dealer's pre-delivery inspection record, and any independent specialist pre-purchase inspection to establish baseline mechanical integrity. The recorded mileage for this vehicle is unknown, which prevents any meaningful analysis of annual usage rates, mileage gaps, or potential heavy-use indicators such as predominantly motorway or urban mileage accumulation. For a vehicle of this age, average annual mileage in the UK typically falls between 8,000 and 12,000 miles, so establishing the odometer reading during a physical inspection is essential. A very low recorded mileage on a 2025 model could indicate extended periods of standing, which brings its own concerns regarding brake disc corrosion, brake caliper seizure, and potential moisture retention within the exhaust system, whereas a high mileage relative to age would warrant closer scrutiny of the mild-hybrid system components, including the 48-volt electrical architecture, integrated starter-generator, and associated control modules that differentiate the MHEV variant from the standard combustion line-up. Given the absence of MOT history and unknown mileage, the buyer's inspection strategy should be calibrated to the vehicle's calendar age rather than any recorded wear data. Externally, the tyres should be examined for sidewall perishing and tread depth, as even lightly used tyres degrade through ozone exposure and UV radiation over time, and the date code on the sidewall should be checked to confirm the rubber is not approaching the end of its service life regardless of remaining tread. The 12V auxiliary battery, which supports the mild-hybrid system, should be load-tested to confirm cranking performance and state of health, as premature battery failure is a recognised issue on vehicles with prolonged standing periods or frequent short journeys that do not allow full recharge. Brake discs should be inspected for surface oxidation and any lipping, and the caliper slide pins and handbrake mechanism should be exercised to ensure they have not seized from disuse. Internally, all time-based servicing items must be verified regardless of the odometer reading, as Mercedes-Benz schedules replacement of brake fluid, coolant, and transmission fluid on calendar intervals rather than purely by distance. The engine oil and filter should be checked for the correct specification meeting the MB 229.52 or 229.61 standard, and the service book should be reviewed for stamps at the appropriate intervals to confirm warranty compliance, since the manufacturer warranty typically requires documented servicing through an authorised Mercedes-Benz workshop. The diagnostic system should be scanned using a professional-grade tool such as the Mercedes Star Diagnosis system to confirm no fault codes are stored within the mild-hybrid control unit, the driver assistance systems including the radar and camera arrays, and the emissions control system. A road test should focus on smooth engagement of the integrated starter-generator, absence of warning messages on the instrument cluster, and quiet operation of the suspension over uneven surfaces, with particular attention to any clonks from the front axle components, which can indicate premature wear on the control arm bushes commonly seen on the current C-Class platform.