NASCAR racing, despite its massive popularity, does face some criticisms. A primary concern is the lack of diversity in the sport, both among drivers and fans. There's also criticism over the perceived monotony of the races, as some folks find the continuous left turns less thrilling. The environmental impact of NASCAR races, namely the carbon emissions and noise pollution, is another point of contention. Lastly, there's the issue of safety, with critics arguing that more could be done to protect both drivers and spectators.