Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
4,432 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.

2014 Chevrolet Sonic fuel system problems

fuel system problem

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2014 Chevrolet Sonic Owner Comments

problem #5

Jun 012015


  • 10,000 miles


Car cuts out, grinding noise from engine. Had ignition coil replaced but still doing the same thing. Looses power going up steep hill. Only had car about seven months. Only has sixteen thousand miles on it. Sometimes while I am driving car just looses power and almost got hit in the back. I feel one of these days someone will hit me. Took it back to dealership and they say nothing is wrong but the problem is getting worse. The car does have warranty on it.

- Peoria, IL, USA

problem #4

Jul 032014

Sonic 4-cyl

  • 5,500 miles
Im only getting about 14 to 16 mpg on my car.I went to the dealer and I was told that it was normal.I said that its impossible to get such low mpg when the paperwork says that I should get 25/35.know I spoke to the service manager and he said that its normal to get 14 to 16 mpg.I told him you telling my 2005 Altima 3.5 gets better gas mileage a Dodge durango gets better gas mileage?? well the service department cant seem to find the problem.they recalibrated everything and its even worse.I spend 300 in gas a month which is unheard of..please help...

- Kissimmee, FL, USA

problem #3

May 312014

Sonic 4-cyl

  • 100 miles
This vehicle is getting between 19-21 mpg at the most, including highway, which is extremely low compared to other similar Sonic vehicle models and the estimated 25/35 mpg for this vehicle.I am wondering if it is leaking fuel. I have never owned a Chevy requiring this much gas. I am concerned that it might be affected by the fuel recall but my VIN is not included. GM and the local dealership have disregarded my concerns, telling me my vehicle is operating normally. I would like my vehicle inspected for safety.

- Phoenix, AZ, USA

problem #2

Jul 042014


  • 3,080 miles
The contact owns a 2014 Chevrolet Sonic. The contact stated while starting the ignition, a strong odor of fuel emitted inside of the vehicle. In addition, the entire fuel leaked out of the fuel tank onto the ground. The vehicle was towed to an authorized dealer. There was a recall associated with NHTSA campaign id number 13V464000 (fuel system, gasoline). However, the VIN was not included. The vehicle was currently being diagnosed. The manufacturer was notified of the problem. The approximate failure mileage was 3,080.

- Tombstone, AZ, USA

problem #1

Jul 042014

Sonic 4-cyl

  • 3,480 miles
Gas started leaking from bottom of gas tank.

- Tombstone, AZ, USA

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