| Issue ID | 910706 |
| Internal NHTSA # | 10451051 |
| Manufacurer | HYUNDAI MOTOR COMPANY |
| Brand | HYUNDAI |
| Model | SONATA |
| Model Year | 2011 |
| File date | 10/01/12 |
| Component | POWER TRAIN |
| Product type code | VEHICLE |
| Description of the problem | During light to moderate acceleration the transmission without warning goes back into a lower gear ( 1st gear ). My first reaction is to let off the accelerator due to high rpm. When this happened the car behind me almost rear ended me. I have taken the car to the dealer once already and i am taking it back again. Unfortunately this is an intermittent problem. Has happened 4 times since jan 2012. My main concern is sometimes we have are granddaughter with us and am afraid that this could cause a accident. |
| Vehicle Mileage at Failure | 6000 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | MOORESVILLE, NC |
| VIN pattern | 5NPEC4ACXBHXXXXXX |
| Was vehicle invloved in a crash? | N |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | N |
| Was medical attention required? | |
| Was part original equipment? | |
| No. of injured persons | |
| No. of fatalities | |
| Date of purchase | 07/08/26 |
| Was original owner? | N |
| Anti-lock brakes | N |
| Cruise control | N |
| Number of cylinders | 4 |
| Drive train type | |
| Transmission type | |
| Vehicle speed | 20 |
| DoT tire identifier | |
| Tire size | |
| Location of tire code | |
| Type of tire failure code | |
| Was defective tire repaired? | |
| Date of manufacture | |
| Type of child seat code | |
| Type of restraint | |
| Dealer's name | |
| Dealer's telephone number | |
| Dealer's city | |
| Dealer's state code | |
| Dealer's ZIP code |