This feature is not available right now. Please try again later… TFSI S Line Nav dr Trim One of the most extreme of the A’s regular trim levels, S line brings sports focused styling modifications rather than a much longer standard equipment list..Audi has extended the engine line up on its A and A saloons with the introduction of a . litresel unit which it’s given the moniker TDI..Audi A . TFSI Quattro S Line dr S Tronic Spec Full specification Audi A . TFSI Quattro S Line dr S Tronic. , More on this car . Take one for a spin or order a brochure..