definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
29,158 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 Hyundai Sonata fuel system problems

fuel system problem

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2012 Hyundai Sonata Owner Comments

problem #12

Apr 092016


  • miles


The has to be something wrong with lighting or electrical system on my car. I have had to replace every headlight, taillight, brake light and license plate light, not once but several times for each one. Must have replaced 16 to 20 lights. Now the horn keeps blowing. I have had to disconnect the battery cable so it doesn't wake up the whole neighborhood.. I am taking it in to the dealer tomorrow. I would appreciate any feedback or if anyone else is having these problems.. this is not normal. Also, it loses power as I am driving. Feels like it is going to stall out, but then takes off again.

- West Palm Beach, FL, USA

problem #11

Mar 262016


  • miles
I was driving down the street and there was a loud noise from engine. All my dashboard lights came on. I lost all power in vechicle.

- Schwenksville, PA, USA

problem #10

Nov 022015


  • 90,000 miles
Boyfriend's vehicle. Check engine light came on and the code P0087 was noted by the obdii (fuel rail pressure low) mechanic originally stated that this was an "intermittent" problem and the whole system would have to be replaced at + $1200. This didn't make sense to him so he asked to be shown exactly where the problem was located, and what part was causing the problem. The mechanic could not give him an answer. "it's around this area" he replied as he waved across the center of car. He went to another mechanic and another after that. Only consistency has been the lack of know how to fix this problem. In the meantime, his oil is thickening and darkening, and his fuel is not giving him the mileage it should. It seems the only assistance anyone wants to give revolves around replacing the whole system, yet the servicemen themselves admit that they are uncertain that this avenue for repair is necessary. None of them can offer us a repair or replacement of the sensor itself. Finally, one mechanic advised us that under the P0087 error code the following could be causing the engine light to come on: 1. weak fuel pump, clogged filter or screen, restricted fuel supply line 2.faulty fuel pump driver module 3.faulty fuel pressure sensor. Unfortunately, this mechanic is a student and not certified to perform repairs. I verified his opinion thru obdcodes.com but was quickly disillusioned because again, no one is willing to check these causes individually. Finally my boyfriend was told to just buy a can of air spray to blow out any surrounding dust and then just let him 'reset' the check engine light and see how long it stays off. I know that this is wrong and have found a repair guide finally. But, I also now find service bulletin no.: tsb-15-01-010 component(s): Engine NHTSA id number: 10058132 that seems to be about this issue. How do we resolve this problem already?

- Upland, CA, USA

problem #9

Oct 012015


  • 55,000 miles


The contact owns a 2012 Hyundai Sonata. The contact stated that while at a stop light, there was strong abnormal odor of fuel. In addition, the vehicle stalled without warning and would take multiple attempts to restart. The failure recurred constantly. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 55,000.

- Charlotte, NC, USA

problem #8

Jun 012013


  • 8,000 miles
On more than a dozen occasions since purchase, the vehicle has neglected to accelerate when the gas pedal is depressed nearly causing me to be hit by oncoming traffic. Additionally, the vehicle has slammed on the brakes at high rates of speed when the driver was barely applying pressure to the pedal; almost causing the vehicle to be rear ended. The vehicle has been inspected by two Hyundai dealerships for the issues; of which they claimed to have replicated. Both dealerships stated that it was normal behavior for the vehicle and there was nothing they could do to make the issues go away.

- Yale, MI, USA

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problem #7

Sep 012014


  • 33,000 miles
The contact owns a 2012 Hyundai Sonata. After refueling the vehicle, a strong fuel odor emitted in and around the vehicle. The vehicle was not diagnosed or repaired. The failure recurred on numerous occasions. The manufacturer was not notified of the failure. The failure mileage was 33,000.

- Mercedes, TX, USA

problem #6

Oct 232014


  • 32,000 miles


Smell of gas, this car have had 2 motor replaced one in June 2014/ 2nd in August 2014 and now a third in Oct 23, filled the car up with gas, got on the interstate and the car started cutting back, big clouds of smoke came from the rear end, black sutt on the exhaust pipes.the car putter on the interstate, had to get off the road car shut down while try to steer to safety, once car shut down it became hard to control, went other the side of rode, hit a water pipe line, car never crank after that. Had to be towed to Hyundai dealer ship. This is the 2nd time I have reported this car. Now it is in the shop awaiting engineering to review it. For the 3rd motor.

- Lugoff, SC, USA

problem #5

Oct 172014


  • 70,000 miles
I had a check engine light on my vehicle and it revealed an issue with the high pressure fuel pump which is located in the engine area. This is not something that should go out that quickly. Apparently this is a common issue with this vehicle and they need to recall these.

- Kennesaw, GA, USA

problem #4

Oct 072014

Sonata 4-cyl

  • 48,000 miles
3rd time the exhaust flap has malfunctioned in the turbo charger. Driving on the highway at a posted speed limit and the car suddenly loses all the power and slows considerably with vehicles behind and beside doing posted speed limit. Concerned about getting hit because of sudden loss of power. Repaired once, unstuck on its own the second time and recently required maintenance to again adjust the system and unstick the exhaust flap on the turbo unit. Currently under warranty however is going to be a very expensive repair when not and also concerned about getting hit from behind when the speed and power suddenly drops as well as not being able to get home when it happens again.

- Concord, NC, USA

problem #3

Aug 302013


  • miles
The contact owns a 2012 Hyundai Sonata. The contact stated that after refueling the vehicle, there was a fuel odor emitting. The vehicle was taken to a dealer where the technician was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was unknown. The VIN was not available.

- Lugoff, SC, USA

problem #2

Apr 302012

Sonata 4-cyl

  • 7,900 miles
Dishonest mileage claims: 2012 Hyundai Sonata."advertised: 26/35" - actual 24/25...not even close. Class action suit in ca but, inexplicably, only 'certain' models. I've not heard one Sonata owner 'happy' with their mileage. Its fraudulent and misleading at best. Hyundai is sending an engineer to look at the vehicle but if they're on Hyundai payroll what kind of result do you think I'll get?

- Pompano Beach , FL, USA

problem #1

Jun 012012

Sonata 4-cyl

  • 6,000 miles
This is a hybrid vehicle. It chugs, hesitates and almost stalls when accelerating from a complete stop. The service people tell me that it is normal but this is my 3rd hybrid and this is not normal.

- Birmingham, AL, USA

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