The engine started using 1 qt every 1000 miles, GMC told us, that was normal. The oil usage increased gradually to 1.5 qts, GMC wouldn't warranty the engine and kept stalling , then the next issue was the high pressure fuel pump was starting to give out, the automatic timing adjustable failed next, this was replaced. No warranty. The oil filter was plugging up with carbon deposits, the car became unreliable in two years, and I should have stayed with Toyota 😁,
I BOUGHT my 2013 Terrain I-4 in September '13, now almost 4 years ago. No substantial complaints, a few rather minor ones, in the context of having traded my very nice 2004 Honda Accord V6 for it. A few cons: MPG disappointing but fair; replaced a minor but cash expensive air-mixing actuator just after warranty; exiting the cabin I seem to always kick or scrape the door sill or interior door panel; driver's seat not supportive enough where back and seat join, even with power lumbar; engine or A/C noisy in ECO mode...and that's about it for cons. Not Bad. NOW the pros - everything else: style inside and out; heated power seats & mirrors and other upscale features; adequate 172 HP (do miss the extra 100 horses); and all the rest. Oh, Terrains are EVERYWHERE in my town. So, 4 years happy vs the Accord was often tapping my checkbook. Just sayin.
my 2013 SLT2 has to be one of the roughest rider and noisest on bumpy roads ever,have talked to the dealer and he simply said (thats the way it is), love the car on smooth roads,4cyl awd, just the klunk -klunk on bumpy roads is a real pain you in know where, this terrian is still a bumpy ride on bad streets, changed out rear shocks, no help, plastic body parts keep coming loose, i use a sheet metal screws to tighten then up, this helps with the noisey ride on bad streets, overall the car has been reliable and really nice to ride on good roads, millage has been as high as 34 mpg with reasonable driving habits
Extremely disappointed with my 2013 GMC Terrain. It has a 2.4 cylinder engine that consumes too much oil between oil changes. A Technical Service Bulletin was issued by GM for the problem but they have not done a full recall yet. Vehicle was stalling due to low oil issues. Intake Solenoid had to be replaced because of low oil levels. Transmission fluid leaked from trans torque converter seal, left rear wheel hub had to be replaced due to bearings going bad all with just 52k miles. The engine specifically in my vehicle is a safety hazard/concern for anyone with a family. My wife is a nanny and does not drive the vehicle aggressively.