In 2020 Consumer Reports tested the 17 ADAS systems available at that time. They concluded their report with this:
"Editor's Note: Consumer Reports also tested an aftermarket system called Comma Two, which is manufactured by Comma.ai. Installed on a Toyota Corolla test car, the system outperformed, in most respects, ones that already come on cars, and it set new standards for the industry. But because CR does not recommend these types of modifications for consumer vehicles, the system is not included in our rankings."