To sell your car online using the "Check Car Value" website, simply start by entering your vehicle details, including registration and mileage. Our platform offers a comprehensive valuation based on Retail, Private, Trade, Dealer Forecourt, and Auction prices. Once you have your valuation, explore our partner options for selling your car, such as webuyanycar, carwow, and Motorway. Choose the best offer that suits your preferences, follow the easy steps provided, and complete the sale process hassle-free.