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.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
41,919 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 Accent engine problems

engine problem

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2012 Hyundai Accent Owner Comments

problem #4

Feb 022016


  • 61,000 miles


The contact owns a 2012 Hyundai Accent. While operating the vehicle, the vehicle accelerated on its own. While parked, the vehicle would rev to approximately 5,000-6,000 rpms even when the brake pedal was depressed or when the vehicle was in another gear. The only way to stop the failure was to remove the key from the ignition. The failure occurred without warning. The vehicle was taken to the dealer where it was diagnosed that the throttle body needed to be cleaned. The vehicle was repaired; however, the failure recurred. The manufacturer was not notified of the failure. The failure mileage was approximately 61,000.

- Morristown, NJ, USA

problem #3

Dec 242015


  • 63,385 miles
Around 50000 miles the car would over rev about 1000-2000 RPM when the clutch was released and foot off of the gas. It has progressively gotten worse. Now it will on its own while standing at idle run up to 5000-6000 RPM without warning and the only way to stop it is to turn the car off. When in gear, the car will accelerate without warning. If you depress the clutch, again it will run up to 5000-6000 RPM. The problem becomes exacerbated in warmer weather and lessened in cold weather. During the 12/24 heat wave here in pa, the car was undriveable and dangerous as I could not depend on it not "taking off". the dealer updated the software on 12/22 which did not resolve the issue, and no codes were found in the computer! before 50,000 miles everything was fine.

- Bethlehem, PA, USA

problem #2

Jul 162014

Accent 4-cyl

  • 22,102 miles
7/15/2012, while pulling off from a stop oil and battery light illuminated and vehicle lost power. No check engine light. Approximately 10 minutes later, vehicle experience same problem. Shutting vehicle off and restarting corrected instant problem. No fault codes stored. Dealership removed, cleaned and re-installed throttle body and suggested using only exxon, mobile or shell gasoline. 7/17/2014, while sitting at a stop light, oil and battery light illuminated and vehicle stalled. Would crank but not start. Vehicle towed to dealership. No fault codes stored. Dealership replaced high pressure fuel pump. 7/31/2014, picked up vehicle from dealership following fuel pump replacement. Drove vehicle 14 miles, when pulling off from a stop, oil and battery light illuminated and vehicle stalled. Restarted vehicle and drove approximately 100 yards, oil and battery light illuminated and vehicle stalled. Upon restart vehicle went into "limp mode". dealership diagnosed problem as being the computer. 7/18/2014 dealership called and advised Hyundai tech line directed replacement of transmission range switch not computer. 8/15/2014, while pulling off from a stop oil and battery light illuminated and vehicle stalled. Restarted vehicle and took to dealership. 8/16/2014, no fault codes stored. Dealership advised nothing wrong with vehicle but will continue to drive. 8/18/2014, about 10 miles from dealership, while pulling off from a stop oil and battery light illuminated and vehicle lost power. 8/19/2014, dealership advised no fault codes were stored and Hyundai tech line advised to replace low pasture fuel pump, fuel injectors and fuel rail.

- Yorktown, VA, USA

problem #1

Jul 172014


  • 21,189 miles
After pulling out from a stop vehicle would not accelerate and went to an idle mode, oil light and battery light illuminated but no check engine light. Vehicle was turned off and restarted and everything worked fine. Vehicle experienced the same problem about 20 minutes later. Vehicle was taken to Hyundai dealership and the tech experienced the same problem during test drive. Vehicle did not store a dtc error code to dealership called tech line who advised to remove and clean throttle body. Vehicle was driven for 1 1/2 days following repair. Today while stopped at an intersection same problem occurred, oil light came on, battery light came on and vehicle went to idle mode. Vehicle was shut off and would not restart. Had to be towed to dealership.

- Yorktown, VA, USA

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