Noted German charioteer losing wheel (6)
I believe the answer is:
wagner
'noted german' is the definition.
(I've seen this before)
'charioteer losing wheel' is the wordplay.
'charioteer' becomes 'wagoner' (I've seen this in another clue).
'losing' is a deletion indicator.
'wheel' becomes 'O' (O looks like a wheel).
'wagoner' with 'o' taken out is 'WAGNER'.
(Other definitions for wagner that I've seen before include "German cycle-maker" , ""The Ring of the Nibelung" composer" , "German composer of The Ring Cycle" , "German composer of The Flying Dutchman" , "Richard . . . . . . composed The Flying Dutchman" .)