The 2014 GMC Terrain is primarily powered by a 2.4-liter Ecotec inline-4 engine, with an optional larger 3.6-liter V6 available on certain trims for more power.
In 2014, GMC offered two engine choices for the Terrain. The baseline 2.4L four-cylinder is the standard setup found in most models, delivering modest output and good fuel economy. An optional 3.6L V6 was available on higher trims, providing a substantial boost in horsepower and torque but typically at the expense of fuel economy. The engines pair with a six-speed automatic transmission and are offered with front-wheel drive or all-wheel drive.
Baseline engine: 2.4L Ecotec inline-4
The standard powerplant for the 2014 Terrain is the 2.4-liter Ecotec inline-4. It delivers around 182 horsepower and 172 lb-ft of torque, paired with a 6-speed automatic transmission. Front-wheel drive is common, with all-wheel drive available as an option.
Key specs for the 2.4L engine are summarized below:
- Engine: 2.4L Ecotec inline-4
- Power: ~182 hp
- Torque: ~172 lb-ft
- Transmission: 6-speed automatic
- Drivetrain: FWD standard, AWD optional
- EPA estimates (approx): around 22 mpg city / 32 mpg highway with FWD (AWD typically lower)
In practice, the 2.4L engine provides a balanced blend of efficiency and everyday performance suitable for most Terrain buyers.
Optional engine: 3.6L V6
The 3.6-liter V6 is an optional upgrade on select 2014 Terrain trims, offering significantly more power and a smoother highway experience. This engine is part of a broader GM V6 family and is typically paired with the six-speed automatic transmission and available AWD.
Key specs for the 3.6L engine are summarized below:
- Engine: 3.6L V6
- Power: ~301 hp
- Torque: ~272 lb-ft
- Transmission: 6-speed automatic
- Drivetrain: AWD available
- EPA estimates (approx): lower than the 2.4L, typically around the high teens city / mid-20s highway depending on configuration
Overall, the 3.6L V6 option delivers stronger performance and potentially better acceleration, at the cost of lower fuel economy compared to the four-cylinder setup.
Summary
The 2014 GMC Terrain offered two engine choices: a standard 2.4L Ecotec inline-4 and an optional 3.6L V6 on higher trims. The four-cylinder emphasizes efficiency and everyday practicality, while the V6 provides more power and capability for those needing extra performance. Transmission and drivetrain options (6-speed automatic with either FWD or AWD) remained consistent across configurations.


