안녕첫차 is a South Korean used-car retailer operated by 조선의 안녕첫차, with its main office in Suwon and a branch in Incheon. The brand helps customers buy and sell vehicles through its online marketplace, which lists a broad selection of domestic and imported cars, commercial vehicles, and trailers. Listings can be filtered by location, make, model, vehicle type, year, mileage, price, fuel, and color, making it easier to compare available options.

The company promotes transparent pricing, reasonable purchases, a systematic vehicle inspection process, and after-sales support. Its offerings include directly managed vehicles, certified listings, and a stated three-day refund guarantee for eligible vehicles. Customers can browse vehicles online, arrange nationwide remote transactions, request phone consultations, and review buyer feedback. The site also provides information about visiting its locations and services for selling a car. With inventory spanning conventional, hybrid, and electric vehicles, 안녕첫차 presents itself as a marketplace designed to make buying or selling a used vehicle more accessible, including for first-time buyers.