My husband and I were traveling on the highway doing 75mph. A deer ran out in front of us causing a crash. The front end of the car was extremely damaged and onstar reflects the drivers side air bag deployed (which it sounded like when we hit as we heard a big bang) but no air bag deployed. The car also immediately locked up. The driver stated he could not brake or accelerate and lost all steering. The brake locked up and we went from 75-0 immediately. Thankfully there was not ice on the road as we would have been just full force ahead and thankfully there was no one behind us as they would have totally been in our back seat. Both would have been even worse of an accident then they already were! There was smoke from the brakes (obviously going from 75-0 caused some brake wear and tear) EMT looked at the seat belts as the passengers retracted after she slid forward causing injury to the abdomen. The driver was able to brace a little so not as bad. Insurance is inspecting it today for damage so totality of the damage is unknown at this time. Prior to the Collison the lights warning you of a collision went off but there was no time to react.
The worst 2027 GMC Terrain problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Airbags1
- Driver assistance1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Airbags1
- Driver assistance1
Recalls
No recalls on record for this model year.
Technical service bulletins for the 2027 GMC Terrain 22
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Unknown or other
- Unknown or other
- • Improved shifting performance in Terrain or Tow/Haul Mode • More reliable power liftgate operation after...
- Onstar connectivity features may be inoperative
- Unknown or other
- Unknown or other
- Unknown or other
- Unknown or other
- Unknown or other
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
2027 GMC Terrain fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 1.5L 4‑cyl | FWD | 25 | 28 | 26 |
| 1.5L 4‑cyl | AWD | 24 | 26-28 | 25 |
What 2027 GMC Terrain owners say
Most recent owner complaints, unedited.
Compare the 2027 GMC Terrain
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Other model years
201020112012201320142015201620172018201920202021202220232024202520262027
Questions about the 2027 GMC Terrain
Is the 2027 GMC Terrain reliable?
Owners have filed 1 complaint about the 2027 GMC Terrain, fewer than a typical Terrain model year.
What is the most common problem with the 2027 GMC Terrain?
Airbags, with 1 complaint. Next is driver assistance (1).
How many recalls does the 2027 GMC Terrain have?
No recalls on record.
What year does the GMC Terrain have bad airbags?
The GMC Terrain model years with the most airbags complaints are 2011 (25 complaints), 2012 (25 complaints) and 2010 (24 complaints).
What gas mileage does the 2027 GMC Terrain get?
Official estimates for the 2027 GMC Terrain range from 25 to 26 mpg combined. The most efficient version (1.5L 4-cyl, FWD) gets 25 city and 28 highway.
VIN decoder
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