Chris Evans announced on Monday he will not return for another season as co-host of the re-vamped, British version of "Top Gear." "Stepping down from Top Gear. Gave it my best shot but sometimes that's not enough. The team are beyond brilliant, I wish them all the best," Evans tweeted. "Full steam ahead then with Radio 2, CarFest, Children In Need, 500 Words and whatever else we can dream up in the future." The announcement came after the new cast wrapped up its first season together amid reports of low ratings and a lukewarm reception from fans. The re-tooled show debuted in May. Jeremy Clarkson was fired from "Top Gear" a year ago after a dustup with a producer, and his longtime co-hosts James May and Richard Hammond refused to do the show without Clarkson. Replacing the trio were Evans, Matt LeBlanc, Eddie Jordan, Sabine Schmitz, Chris Harris and Rory Reid. The BBC has not announced who might return for another season.