Notes: The 2012 Chevrolet Sonic is fairly new & is already showing an early trend of transmission problems.

Owners report hesitation when shifting & grinding/hard shifting into gears. Some dealers are calling the condition "normal". Another owner reported his dealership replaced the transmission under warranty, but the new transmission had the same exact grinding problem. Design defect?


really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
44,600 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2012 Chevrolet Sonic fuel system problems

fuel system problem

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2012 Chevrolet Sonic Owner Comments

problem #2

Mar 132014

Sonic 4-cyl

  • 34,000 miles


A bad smell like rotten eggs, keeps coming out of the ac/C vents and the engine of the car. I changed the air filter and everything but nothing happen the smell does not go away.

- Los Angeles, CA, USA

problem #1

May 282014

Sonic 4-cyl

  • 55,200 miles
My mother stated that she was sitting still at a red light waiting for it to turn green when out of no where the engine revved up and the car lunged forward causing her to strike the car that was in front of her. She managed to steering around that car and bring the car to a stop. She and my sister told me this is not the first time this has happened. Both times the car was standing still and her feet were on the brakes.updated 06/03/14

- Atlanta, GA, USA

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