Launched in 1999, Autotrader was one of the first nationwide, online marketplaces for new and used cars and is our choice for the best site overall due to its reputation, reach, and abundant research guides. The site hosts over three million vehicle listings and offers detailed car reviews, finance calculators, and more.

One of Autotrader’s best features is its advanced search function which makes sorting through its millions of listings much less daunting. Beyond simple make, model, and year, the site offers detailed filters that let users select nearly any search criteria, including gas mileage, exterior and interior colors, transmission type, technology, and more.

Autotrader also publishes a number of resources for car buyers and sellers. These include comprehensive how-to guides, current car reviews, research and news articles, car payment and financing calculators, and even the ability to apply for a loan and shop for car insurance.

Those who want to sell on Autotrader, however, will have to pay. The site charges $49 per listing which includes up to 30 photos, reports showing how many people have viewed the ad, and simultaneous listings on Kelley Blue Book. After the initial payment, ads can be renewed for free every 30 days for up to a year.

According to investopedia.com. Source of photos: internet