Possible Clues:

• A6 or A8 maker
• Car that's sound with nothing missing
• Maker of the A4, A6 and A8
• 'Never follow' sloganeer, once
• European carmaker
• Auto make owned by Volkswagen
• European car
• Certain import
• Autodom's A8 or Q7
• Car make whose name sounds like a Cockney greeting