COSTA MESA, Calif. - Nadaguides.com - a leading publisher of used car values - has launched a side-by-side vehicle comparison tool that lets consumers compare up to four different vehicles simultaneously. The new tool allows consumers to compare new vehicles against used vehicles as far back as 1998. Vehicle buyers can how handpick the vehicles they want to compare side-by-side, or they can select to have nadaguides.com select a `recommended' list of vehicles to compare. The `recommended' feature automatically provides a list of vehicles with similar designs, pricing, features, and specifications. In addition to pricing information, the nadaguides.com comparison tool provides a comprehensive chart of detailed information for each vehicle, such as powertrain data, fuel economy, cruising range, engine type, and displacement.