all vehicles · every Terrain year · method

GMC Terrain 2018

Safety complaints filed by owners in the first three years, per 1,000 sold.

0.65 per 1,000

1.9 times this nameplate’s own median · from 65 complaints filed in the first three years, of 223 ever. 95% lower bound 0.49.

Against its own model years

The model year carries far more information than the badge, so this is the comparison that matters.

Model year	Per 1,000	Complaints
2010	0.55	33
2011	0.83	60
2012	0.27	24
2013	0.34	34
2014	0.34	35
2015	0.24	26
2016	0.15	15
2017	0.20	17
2018	0.65	65
2019	0.46	50
2020	0.41	38
2021	0.20	13
2022	0.52	35
2023	0.23	18

What owners describe

Phrases over-represented in these complaints compared with the same component on every other vehicle. Counts are complaints containing the phrase.

Service Brakes 83 complaints

vacuum	44	52%
vacuum pump	42	50%
brake assist	24	29%
camshaft	10	12%
cam	10	12%

Engine 55 complaints

vacuum	20	37%
pump	19	35%
vacuum pump	18	33%
camshaft	11	21%

When it breaks

57% of reported failures happened before 30,000 miles (median 18,500 miles, from 91 complaints that recorded one).

No clear early or late pattern.

What NHTSA did

No NHTSA investigation covers this model year.

That is not a clean bill of health, and not a criticism of the agency: investigations open for many reasons and complaint volume is only one of them.

What owners and forums say

Not built yet. This panel is meant to carry community sentiment beside the filed-complaint data, so the two can be compared. Showing something weaker here would defeat its purpose.

Check this yourself

Example records behind this page:

11054233 · 11057250 · 11062141 · 11066136 · 11066977 · 11072977

Limits of this figure. It counts safety complaints filed with the federal government, which is a floor on failures and not a census: problems that only cost money are under-reported. Complaint rates also reflect how likely a brand’s owners are to file, which cannot be separated from how often the car fails. Sales are calendar-year and the denominator for this nameplate is automated checks only, not verified against an external source.