As of 2021, officially retired Need for Speed: Carbon along with several other older titles. This means:
Whether you're looking to relive the canyon races of Palmont City or experience the sequel to Most Wanted for the first time, finding a legitimate way to download can be tricky today. The Legal Status of NFS Carbon need-for-speed-carbon-game-free-download
The only 100% legal way to own the game now is by purchasing a used physical disc from secondary markets like eBay or Amazon. Beware of "Free Download" Sites As of 2021, officially retired Need for Speed:
Online multiplayer and leaderboards were officially shut down in September 2021. As of 2021
Many sites claiming to offer "Full Version Free Downloads" bundle malware, adware, or miners with the game files.