Things to keep in mind before you buy or lease a car: Select your car’s features - Consider vehicle’s fuel efficiency rating. Calculate your budget. Narrow your choice of vehicle make and model. Consider whether to buy new or used. Determine if you will purchase or lease - carefully weigh the pros and cons. Research price information for the vehicle you have chosen. If buying or leasing from a dealer, check the dealer’s complaint history. Carefully read the auto advertisment for all disclosures.