Model car running around rubbish pile (7)
I believe the answer is:
replica
'model' is the definition.
(a model is a replica of something else)
'car running around rubbish pile' is the wordplay.
'running' indicates an anagram.
'around' is an insertion indicator.
'rubbish' is an anagram indicator (a poor quality or rubbish spelling of the letters).
'car' anagrammed gives 'rca'.
'pile' anagrammed gives 'epli'.
'rca' going around 'epli' is 'REPLICA'.
(Other definitions for replica that I've seen before include "I parcel (anag) - reproduction" , "Copy original" , "Caliper (anag)" , "Parcel I used to contain exact copy" , "Duplicate" .)