Trouble getting to grips with motorway in the German car (7)
I believe the answer is:
daimler
'car' is the definition.
(I've seen this before)
'trouble getting to grips with motorway in the german' is the wordplay.
'trouble' becomes 'ail' (synonyms).
'getting to grips with' is an insertion indicator (one group of letters grips another).
'motorway' becomes 'M' (as in motorway names - M1, M4 etc).
'in' indicates putting letters inside.
'the german' becomes 'der' ('the' in German).
'ail' placed around 'm' is 'aiml'.
'aiml' going within 'der' is 'DAIMLER'.
(Other definitions for daimler that I've seen before include "Car manufacturer" , "Red Liam has a swanky car" , "Make of car" , "German car pioneer, lead rim (anag.)" , "A milder form of a posh car" .)