General Motors has a solid history with diesels in its range of trucks and international vehicles.
The compact GMC Terrain would benefit from a diesel powerplant in a number of ways. For one, the car would get a much appreciated boost of torque. Using something like the diesel in the Korean Chevrolet Cruze (and the Korean Chevrolet Orlando) that puts out 161 hp and 266 lb-ft of torque. This is just 21 horsepower less than the current four-cylinder Terrain, but almost 80 more lb-ft of torque, giving the Terrain a much more appropriate engine for off-roading. And while it’s hard to guess at fuel economy numbers, it would most likely offer digits that would exceed the current 22/32 mpg of the 4-cylinder while offering a tow rating more like the 3,500 lbs of the V6.