2020 GMC Terrain engine problems
The 2020 GMC Terrain has 56 engine complaints filed with NHTSA — 20% of the year's total, and roughly flat versus the prior model year.
56
Engine complaints
20%
Share of year
0
Crash-involved
0
Related recalls
Engine complaints by year
What owners report
“While on highway service brake system warning light came on,brake became hard to apply almost causing an accident. Vehicle had to be towed to a repair shop(dealer).after paying over $1600 the problem was not resolved and found there are numerous complaints about issues with the terrain and no…”
Common questions
How many engine complaints does the 2020 GMC Terrain have?
NHTSA has 56 complaints about the 2020 GMC Terrain engine — 20% of all complaints filed for that model year.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.