I agree that it was the worst top gear in a long time. The Sweeney section was pointless filler and not very funny either. There was a time when I loved their zany antics but now I prefer the actual car segments.
They haven't done any decent challenges for a while either. 3 second hand cars of a certain category etc
I'm also a little tired of the constant super car segments, I like when they focus on more realistic cars or popular cars that the average viewer may want or afford. I like when they ad lib about cars and argue over opinions etc, it feels more natural than the heavily scripted sit com elements.
The frustrating thing about the show at the moment is that there are still lots of really good things about it. The potential is still there but they seem to have lost their way.