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2013 Cadillac CTS Green

6.0
On Green
While the 2013 Cadillac CTS manages to keep pace on performance, looks, and features, it's beginning to show its age in relation to the newest additions to the mid-size luxury fold from BMW and Mercedes in gas mileage.

Without a fuel-sipping turbocharged four-cylinder, the CTS gets only middling fuel economy from its pair of V-6s: the 3.0-liter engine yields 18/27 mpg city/highway in rear-drive cars with automatic  transmission, while the manual slashes that to 16/26 mpg. Somewhat unexpectedly, the larger 3.6-liter V-6 gets better fuel economy than the 3.0-liter when all-wheel drive enters the picture, scoring 18/27 mpg to the smaller engine's 18/26 mpg.

The Sport Wagon, with standard all-wheel drive and automatic transmission, gets 18/27 mpg with the 3.0-liter and 18/26 mpg with the 3.6-liter.

Compared to the latest from other brands in class, the 2013 Cadillac CTS V-6 engine lineup isn't as green as it could be.

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