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2013 Mercedes-Benz CLS : 17/25 mpg (CLS 550); 16/25 mpg (CLS 550 AWD); 15/22 mpg (CLS 63 AMG)
EPA »
Thanks to a whole suite of drivetrain refinements, Mercedes says the CLS63 now avoids the Fed's dreaded gas guzzler tax.
Autoblog »
Through the AMG Speedshift MCT seven-speed sports transmission drivers can select between modes C for "Controlled Efficiency," S, S+, M, and RS for "Race Start." In C, now there's a Toyota Prius-like green ECO light that lulls us into thinking we're actually doing earth a favor by buying an AMG and leaving every intersection in 2nd gear.
Inside Line »
GREEN | 6 out of 10
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2013 Mercedes-Benz CLS : 17/25 mpg (CLS 550); 16/25 mpg (CLS 550 AWD); 15/22 mpg (CLS 63 AMG)
EPA
Thanks to a whole suite of drivetrain refinements, Mercedes says the CLS63 now avoids the Fed's dreaded gas guzzler tax.
Autoblog
Through the AMG Speedshift MCT seven-speed sports transmission drivers can select between modes C for "Controlled Efficiency," S, S+, M, and RS for "Race Start." In C, now there's a Toyota Prius-like green ECO light that lulls us into thinking we're actually doing earth a favor by buying an AMG and leaving every intersection in 2nd gear.
Inside Line
While the 2013 Mercedes-Benz CLS Class evades the gas guzzler tax, it's still by no means in league with the greenest of the luxury sedan class. On the other hand, the CLS is powerful, luxurious, and large--and considering those factors, surprisingly efficient.
The standard CLS 500 with rear-wheel drive rates 17 mpg city and 25 mpg highway according to the EPA. Adding all-wheel drive cuts the mileage to 16/25 mpg. The massively powerful CLS63 AMG scores a still-fair 15/22 mpg, for 18 mpg combined.
Conclusion
Though it won't win any gas-saving awards, the 2013 Mercedes-Benz CLS Class is surprisingly efficient for a large, fast, V-8 luxury car.