| 2018 GMC Terrain | VS | 2018 Subaru Outback |
| Turbo., 1.5-L, 4-Cyl. | Engine | 2.5-L, 4-Cyl. |
| Nine-speed automatic | Transmission | CVT |
| 3,500 lbs. | Max. Towing Capacity | 3,000 lbs. |
| Yes | Diesel Engine Option | No |
It's not uncommon for automakers to retain powertrain equipment in a vehicle when it's redesigned. If GMC is anything, it's uncommon. In addition to a more refined interior and a more aerodynamic exterior, the 2018 GMC Terrain is also available with three brand new engine options. Base models are outfitted with a turbocharged, 1.5-liter, four-cylinder engine making 170 horsepower and 203 pound-feet of torque. By comparison, the 2018 Subaru Outback starts out with a naturally aspirated four-cylinder engine of its own, that makes about five more horsepower. This advantage is quickly mitigated by the additional towing capacity the Terrain has over the Outback.
The big performance news for the 2018 GMC Terrain is the introduction of a turbocharged diesel engine. Buyers choosing the diesel option will be able to use 240 pound-feet of torque as well as being able to record as much as 40 miles per gallon on the highway, according to Environmental Protection Agency fuel economy estimates.