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23 mpg city, 31 highway (CVT); 19/27 (manual, 2.5i); 18/25 (2.5GT); 18/25 (3.6R)
U.S. EPA »
Non-turbo versions use regular-grade gas. Premium is required for the turbocharged GT.
Consumer Guide »
The slow lane's hitting 80 mph, and almost nobody's in the slow lane. Getting 32 in that setting is exceptional.
USA Today »
GREEN | 7 out of 10
Expert Quotes:
23 mpg city, 31 highway (CVT); 19/27 (manual, 2.5i); 18/25 (2.5GT); 18/25 (3.6R)
U.S. EPA
Non-turbo versions use regular-grade gas. Premium is required for the turbocharged GT.
Consumer Guide
The slow lane's hitting 80 mph, and almost nobody's in the slow lane. Getting 32 in that setting is exceptional.
USA Today
The 2012 Subaru Legacy has the honor of getting the highest fuel economy ratings of any mid-size sedan with all-wheel drive. That's a small group, granted, but it's due to the Lineartronic continuously-variable (CVT) automatic transmission that's available in the Legacy 2.5i model. It's rated at 23 mpg city, 31 mpg highway, and a combined 26 mpg--a figure we've met or exceeded in a mix of driving.
Sadly, though, the rest of the Legacy range doesn't return gas mileage that's so impressive. Opting for the six-speed manual is one hit (it drops to a combined 22 mpg rating), and the more powerful turbocharged 2.5GT engine takes it down further to a combined 21 mpg (and requires premium gasoline as well).
Worst of all, the 3.6R models with the six-cylinder engine and a five-speed automatic come in at 18 mpg city, 25 mpg highway, for a combined rating of 20 mpg--significantly below some competitors' six-cylinder models, though admittedly they may not offer all-wheel drive.
Conclusion
The base 2.5i version of the 2012 Subaru Legacy leads its segment for gas mileage when fitted with the Lineartronic CVT, but the rest of the Legacy range isn't nearly as green.