I felt that the second season greatly improved from the first. I'd say the studio segments were still pretty subpar compared to the Top Gear days, but they seemed to get a better handle on the rest of it. I haven't watched the latest season yet, but hopefully they managed to improve again.

If you gave up after the first season, you might want to give the later ones a shot. Though I have to admit I never cared too much about the reviews, so that's worth keeping in mind.