Setting the reserve price for an auction can be a complex process that requires careful consideration of various factors, such as the condition of the vehicle, market demand, and your expectations for the final selling price. Here are some steps to help you set a reasonable reserve price for your motor vehicle auction:

Research the market: Research the current market value of similar vehicles in the same condition as yours. Look for vehicles that have sold recently in similar auctions, online marketplaces or through dealerships. Consider the make, model, year, mileage, and any unique features of your vehicle.

Evaluate the condition of the vehicle: Determine the condition of the vehicle and whether there are any repairs or upgrades that could potentially increase its value.

Determine your minimum acceptable price: Consider your minimum acceptable price for the vehicle, which is the price you would be willing to accept if the auction doesn't reach your reserve price.

Consider the auction format: Determine the type of auction you are using and how the reserve price will be handled. For example, some auctions may allow you to set a reserve price, while others may require you to sell to the highest bidder regardless of the final price.

Be realistic: Be realistic about your reserve price and consider setting it slightly lower than your ideal selling price. This can help generate interest from potential bidders and increase the chances of a successful auction.

Consult with experts: Consult with experts in the field such as appraisers or dealers who can provide valuable insights into setting the reserve price.

Remember that setting the reserve price too high could potentially discourage potential bidders, while setting it too low could result in a lower-than-expected selling price. It is important to find the right balance to ensure a successful auction.