The good: A diesel drivetrain gives the 2014 Audi A7 TDI impressive fuel economy for a large car. Connected features include Google local search and Google Earth integrated with navigation. Bang & Olufsen audio delivers detailed and balanced music reproduction.
The bad: The A7 TDI requires additional maintenance in the form of 10,000 mile AdBlue fill-ups. Audi's proprietary audio port requires adapter cables for external devices; a standard USB port would be preferable.
The bottom line: The 2014 Audi A7 TDI includes some of the best connected tech available today in an automobile, and those inclined to put up with a few diesel drivetrain quirks will be rewarded with significantly higher fuel economy than from the gasoline equivalent.
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