Rally round here and clean motor, muddy (5,5)
I believe the answer is:
monte carlo
'rally round here' is the definition.
(as in the Monte Carlo Rally)
'clean motor muddy' is the wordplay.
'muddy' is an anagram indicator (letters get muddied or confused).
'clean'+'motor'='cleanmotor'
'cleanmotor' with letters rearranged gives 'MONTE CARLO'.
'and' is the link.
(Other definitions for monte carlo that I've seen before include "Town near Nice" , "Destination of a car rally - place with a famous casino" , "Town, resort and casino of Monaco" , "place of speculation" , "Mediterranean resort" .)