Googlade lite och hittade denna Audi-sidan (en svensk som driver den verkar det som?).
http://www.audivorsprung.com/The 1980s saw the introduction of new codes like CL and CC. As time went by, the meaning behind the letters lost importance, and instead they became more of simply nice-sounding letter combinations. Code Stands for Equipment and performance level
- - Basic equipment level, basic output engine.
L Luxus Medium equipment level, basic output engine.
S Sport, Super Basic equipment level, medium output engine.
LS Luxus Sport, Luxus Super Medium equipment level, medium output engine.
GL Grand Luxus, Grand Luxe Top equipment level, high output engine.
GLS GL + Sport, Super Top equipment level, high output engine.
GLE GL + Einspritzung Top equipment level, high output engine with fuel injection.
GT Gran Turismo, Grand Touring Sports equipment level, sports engine.
GTE GT + Einspritzung (injection) Sports equipment level, sports engine with fuel injection.
C Complete Basic equipment level, basic output engine.
CL Complete Luxe Medium equipment level, medium output engine.
CC Complete Comfort Medium equipment level, medium or high output engine.CS Complete Sport Medium equipment level, high output engine, quattro 4-wheel-drive.
CD Corps Diplomatique Top equipment level, high output engine.
D Diesel Basic equipment level, diesel engine.
LD L + Diesel Medium equipment level, diesel engine.
GLD GL + Diesel Top equipment level, diesel engine.
5S 5 Sport Five-cylinder engine with carburettor.
5E 5 Einspritzung Five-cylinder engine with fuel injection.
5T 5 Turbo Five-cylinder engine with turbocharger.
5D 5 Diesel Five-cylinder diesel engine.
Dock har han ingen säker källa, men som ola89 skrev 'Complete Comfort' låter väl trevligt?