If the clutch felt OK on the drive, ie not slipping, i'd think it might well be a sticking/binding brake.

Is the car easy to push? / is any wheel hotter than the others? Maybe best bet is jack it up and check each wheel is free to turn

Last edited by andymot; 01/09/18 06:15 PM.
2015 Morgan 4/4 (Wolf fettled) previously 2014 M3W
MINI Cooper S and numerous BMC/BL relics.