A bad driver turned up (7)
I believe the answer is:
arrived
'turned up' is the definition.
'a bad driver' is the wordplay.
'bad' indicates anagramming the letters.
'driver' is an anagram of 'rrived'.
'a'+'rrived'='ARRIVED'
(Other definitions for arrived that I've seen before include "Came" , "completed the journey" , "Reached a destination" , "A driver (anag.)" .)