Gear Renault redesigned (7)
I believe the answer is:
neutral
'gear' is the definition.
(I've seen this before)
'renault redesigned' is the wordplay.
'redesigned' indicates an anagram.
'renault' is an anagram of 'NEUTRAL'.
(Other definitions for neutral that I've seen before include "Not favouring one side or the other" , "On the fence" , "trying to keep out of the war" , "Unaligned" , "Supporting neither side" .)