2018 GMC Terrain Petrol vs Diesel: Which Would You Rather Have?

Aside from the gasoline options, the 2018 GMC Terrain is also available with a 1.6-liter turbodiesel unit, which may end up overshadowing the more powerful 1.5-liter petrol.

At least according to the guys from TheFastLaneCar, who tested the two Terrain versions side by side and found the 1.6-liter diesel to be quiet, reasonably punchy, obviously more fuel efficient and even better-sounding than the 1.5 petrol.

The diesel unit is good for 137 HP and 240 lb-ft (325 Nm) of torque, while the 1.5 turbo petrol puts down 170 HP and 203 lb-ft (275 Nm) of torque.

On paper, the Terrain diesel should return around 28 mpg (8.4l/100km) in the city, and 38 highway mpg (6.2l/100km), which is certainly advantageous compared to the 1.5-liter petrol model, which will only do 24 mpg (9.8l/100km) in the city and 28 mpg (8.4l/100km) on the highway.

In the end, it comes down to personal preference and purchasing price. Also worth noting is the fact that maintenance costs are about the same, so with that in mind, which one would you rather own?


  • kachuks

    That banner pic.

    • OdysseyTag

      The power of a camera angle 👐

  • Bash

    Neither, too ugly to decide.

    • Polyester Poontang

      What about your appearance prevents you from making a decision?

      • Bash

        You must be very happy and proud of your self now.

  • Can’t Disable Stop/Start?

    Neither, because it’s GM. When an issue arrises that’s major, GM will do everything in their power to sidestep matters while telling you a load of crap and passing-the-buck until hell freezes over.

  • Status

    Didn’t know there was a diesel option.


  • brn

    I’d choose the V6. 🙁

  • Six_Tymes

    “coming up, right now”. no need to say both in the same sentence. I’ll give GMC this, it is a good looking SUV. the previous sucked.

    • Bullitt2605

      These are betting looking for sure, the old terrain was awful looking.

  • no25

    Neither. There are FAR way better performing and styled vehicles in this segment.

  • brn

    My biggest disappointment is that the tow rating of the diesel is a mere 1500lbs. Typically, that’d be the reason to get a diesel.

  • Grumpy

    All that buildup with the music….then you hear the exhaust…

  • steve

    Neither – underpowered, boring boxes on wheels!

  • Bullitt2605

    I would go with the 2017 Ford Explorer Sport.

  • Sjaak

    what an ugly face…..

  • Scott Carmichael

    That camera angle makes an already ugly front end more hideous. Granted you would probably never see it, but come on GM, put some thought into your designs. It’s like “what can we do to make unique headlights” is all that mattered here.

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