The vehicle was in PARK and the IGN was in the ON/RUN position and the air conditioning was on. There was no one in the driver's seat but there was an occupant sitting buckled in the front passenger seat. The passenger heard a sound (possibly the ICE turning on) and he felt the vehicle move forward about five inches. He became worried about his safety and pressed the IGN button in order to turn the vehicle off. It could have pushed itself into other cars in the parking lot or pedestrians. A report was made to the local police department on the same day. This occurred in a retail parking lot. Video footage cannot be obtained as a police officer or insurance company must request it. I have not seen a check engine light nor any message prompts and it has not been inspected by a dealership.
2025 Toyota Grand Highlander fuel system complaints
Page 2 of 2: complaints 11 to 12 of 12, newest first, as owners wrote them.
Fuel fill-ups averaging 13-14 gallons when vehicle trip computer alerts 0 miles remaining distance to empty. Fuel tank capacity published as 17.8 gallons. Total vehicle range understated, requiring more frequent stops at gas stations to fill. Not a direct safety concern, but a significant nuisance and dealer has stated this is normal and there is no fix for this issue. EPA estimated MPG 26-27, should equate to approximately 460+ miles/tank. Instead experiencing approximately 350-365 miles per full tank of fuel.
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