CarGurus.com is an online automotive marketplace and automotive research website headquartered in Cambridge, Massachusetts, USA. The website is designed to help consumers research and purchase both new and used cars. CarGurus provides a platform where users can search for cars based on various criteria such as make, model, price, location, and more.

Key features and aspects of CarGurus.com include:

1. Car Listings: CarGurus offers a vast database of car listings from dealerships and private sellers across the United States and other countries. Users can search for specific vehicles and refine their searches using various filters.
2. Pricing Analysis: One of the distinctive features of CarGurus is its pricing analysis. The website uses algorithms to assess the pricing of vehicles and helps users identify whether a listing is a good deal, fair deal, or overpriced. This information is based on market trends and similar listings.
3. Dealer Ratings and Reviews: CarGurus includes ratings and reviews of dealerships. Users can read about other customers' experiences with dealerships and use this information to make informed decisions.
4. Market Insights: CarGurus provides market insights and trends related to car prices, inventory, and demand. This information can be helpful for buyers and sellers to understand the current automotive market.
5. Vehicle History Reports: CarGurus offers access to vehicle history reports, which can provide valuable information about a used car's past, including accidents, title history, and more.
6. Car Valuation: The website provides tools for estimating the value of a user's current vehicle, which can be useful when trading in or selling a car.
7. Mobile Apps: CarGurus offers mobile apps for both iOS and Android devices, allowing users to search for cars and access other features on the go.

CarGurus aims to simplify the car-buying process by providing transparency in pricing and access to comprehensive vehicle information. It is a popular platform for both buyers and sellers looking to navigate the automotive marketplace with confidence. Keep in mind that the specific features and offerings of CarGurus may evolve over time, so it's a good idea to visit the website directly for the most up-to-date information and services.