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19 mpg city, 31 highway (V-6, rear-wheel drive); 18/27 (V-6, AWD); 16/25 (Hemi, RWD); 15/23 (Hemi, AWD); 14/23 (SRT8)
EPA »
Chrysler is aiming for a 30-mpg highway rating with the new transmission, which is a ZF design (the best the Pentastar manages with the old five-speed is 27 mpg).
Car and Driver »
...the new 300 earns EPA ratings of 18 miles per gallon city and 27 mpg highway, which trails the BMW 535i at 19/28 and 528i at 22/32.
Autoblog »
GREEN | 6 out of 10
Expert Quotes:
19 mpg city, 31 highway (V-6, rear-wheel drive); 18/27 (V-6, AWD); 16/25 (Hemi, RWD); 15/23 (Hemi, AWD); 14/23 (SRT8)
EPA
Chrysler is aiming for a 30-mpg highway rating with the new transmission, which is a ZF design (the best the Pentastar manages with the old five-speed is 27 mpg).
Car and Driver
...the new 300 earns EPA ratings of 18 miles per gallon city and 27 mpg highway, which trails the BMW 535i at 19/28 and 528i at 22/32.
Autoblog
All the retail versions of the Chrysler 300 models get a big boost in fuel economy for 2012--thanks to the introduction of a new eight-speed automatic transmission, which yields new EPA numbers of 19 mpg city, 31 highway in rear-wheel-drive form.
All-wheel drive drops ratings to 18/27 mpg, while the 300C HEMI V-8 will earn highway numbers of up to 25 mpg. And you might see even better real-world numbers with the V-8 if you can keep your right foot light, thanks to cylinder deactivation.
SRT8 models provide a thrill and enthusiast appeal unmatched by the rest of the lineup, but it has its costs--namely EPA-rated city fuel economy as low as 14 mpg. And based on our experience with this combination, that's optimistic.
Conclusion
Hemi V-8-powered versions of the Chrysler 300 and 300C are thirsty; but V-6 versions are much more fuel-efficient.