Normally I am quite the cynic on US copies of foreign TV shows, as they are rarely any good after being dumbed down, but I have to say that I don't mind the US TG version. Is it as good after 4 episodes as the original with many seasons under its belt - no, but if the original TG wasn't around, then this would be light years ahead of the other bland and boring car shows that are on in the US. They are either showing restos/rebuilds that would normally just be done by professionals; auctions of exotic cars that are beyond the pocket book of most classic car enthusiasts; or they are just boring commercials for the car companies that are mindful of litigation - MotorWeek etc. So I may be in the minority here, but I hope that it gets the chance to further improve and not just get quickly cancelled.
That said, the original is still king and even the Missus enjoys watching it.