2014 GMC Terrain

The 2014 GMC Terrain draws the most owner complaints around the engine, with excessive oil consumption being the standout theme. Owners repeatedly describe the engine burning through oil at an abnormal rate, sometimes a quart or more per week, often with no visible leaks and little warning before serious damage occurs. Several report the engine stalling or failing entirely, with diagnoses pointing to worn piston rings or complete engine replacement. Visibility and wiper complaints make up the second-largest group, with owners describing wiper failures and obstructed sightlines. Powertrain complaints, while lower in volume, include reports of jerking, hesitation, and rough running, sometimes accompanied by a check engine light. The oil consumption pattern is the most consistent thread across this model year, with owners frequently noting the problem only after significant engine damage had already occurred.