WORST - MPG cars in vehicle class - 2011
Class	Make/Model	MPG city/highway
Two Seaters	Bugatti Veyron	8/13
Minicompact Cars	Aston Martin DB9	11/17
Subcompact Cars	Bentley Continental GTC FFV	8/13
Compact Cars	Rolls-Royce Phantom Coupe	10/17
Midsize Cars	Bentley Mulsanne	11/18
Large Cars	Rolls-Royce Phantom	10/16
Small Station Wagons	Cadillac CTS Wagon	12/18
Midsize Station Wagons	Mercedes-Benz E350 4matic (wagon)	16/23

WORST - MPG cars in vehicle class - 2010
Class	Make/Model	MPG city/highway
Two Seaters	Lamborghini Murcielago & Roadster	8/13
Minicompact Cars	2010 Aston Martin DB9	11/17
Subcompact Cars	2010 Bentley Continental GTC	10/17
Compact Cars	2010 Bentley Azure	10/17
Midsize Cars	2010 Ferrari 612 Scaglietti	9/16
Large Cars	2010 Maybach 57	10/16
Small Station Wagons	2010 Infiniti EX35	16/23
Midsize Station Wagons	2010 BMW 535i Sport Wagon xDrive	16/23