NHTSA Complaint #11630028 — 2012 CHEVROLET VOLT ENGINE

Complaint Details

ODI Number	11630028
Vehicle	2012 CHEVROLET VOLT
Component	ENGINE
Date of Incident	November 1, 2018
Date Filed	December 11, 2024
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	MN

Consumer Description

Vehicle over-revs in cold weather. Engine runs excessively fast (4250 RPM) at highway speeds and around 3000 RPM when just sitting. Often times if I pull over and restart the car it will correct itself. This results in MPG as low as 22. The internet is full of examples of people with the exact same problem. I have seen no examples of the problem being solved. The engine will operate correctly in warmer weather (above 50° F). I believe it is related to an aging propulsion battery and could be solved by improved programing to accommodate the battery state.

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