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2012 GMC Terrain Photo
7.0
/ 10
On Green
BASE INVOICE
$24,282
BASE MSRP
$25,560
On Green
Gas mileage is a major selling point for the 2012 GMC Terrain.
7.0 out of 10
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GREEN | 7 out of 10

Expert Quotes:

2012 GMC Terrain four-cylinder: 22/32 mpg (FWD); 20/29 mpg (AWD)
EPA

2012 GMC Terrain V-6: 17/24 mpg (FWD); 16/23 mpg (AWD)
EPA

Eco mode recovers nearly 1 mile per gallon, though drivers are likely to forgo the setting's increased vibration and harshness for incrementally lower fuel economy.
Popular Mechanics

there's an "Eco" button forward of the shifter on four-cylinder models…It’s good for 1 mpg and worth remembering to engage if you're on a long freeway run, although it could prove annoying in stop-and-go situations.
Inside Line


A new entry in the GMC lineup in 2010, the Terrain is the truck brand's most fuel-efficient vehicle, and it's also one of GM's best crossovers for gas mileage.

The base Terrain's 2.4-liter four-cylinder gets some of the latest gas-saving features, like direct injection, in its quest for efficiency. It pays off, too: it's rated by the EPA at 22/32 mpg, higher than all its mid-size crossover competition save for the nearly identical Chevy Equinox. Even the addition of all-wheel drive doesn't harm mileage too badly: the AWD Terrain still earns a 20/29-mpg rating.

Perhaps even more of interest in four-cylinder models is the new 'Eco' button which, when engaged, causes accessories like the air conditioning compressor to be a little more conservative, has the torque converter lock up a little earlier, and makes the transmission a little more reluctant to downshift.

Once you choose the Terrain's optional V-6, the numbers take a big fall. The 3.0-liter V-6 makes much more power, but that leads to gas mileage of 17/24 mpg--or even 16/23 mpg when all-wheel drive is fitted.

Conclusion

Gas mileage is a major selling point for the 2012 GMC Terrain.

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