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Fuel systemPart report

2012 Hyundai Sonata Hybrid Fuel system Problems

Complaints
5about this part
Share
3%of 155 total for the year
Median mileage
41,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 5 complaints about the fuel system of the 2012 Hyundai Sonata Hybrid, 3% of the 155 complaints for this model year. Where a mileage was given, the median is 41,500 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Slowly accelerating up a small hill at approximately 3 to 5 MPH. Began to break at top of hill which is at the exit of a very busy road. Suddenly car began to accelerate without my foot on the gas or on cruise. I had foot on the brake when this happened. I had to break harder to avoid being hit by 4 lane traffic. Car moved about a foot after brake was applied harder.”

NHTSA complaint #10564584, filed 2014-02, 32,000 miles

“When accelerating from a stop, the vehicle takes excessively long time to go from 0-25 MPH, so much so , that when merging into traffic it has unpredictable acceleration. At various times I would step on the gas pedal and sometimes it would have a 3-5 second delay before going forward. When it finally accelerates sometimes it has a popping sound and often the car lurches. I have brought it in 3 times for Hyundai to find the problem but each and every time they have said they were not able to find anything wrong with the car.”

NHTSA complaint #10618751, filed 2014-08, 350 miles

“This is my second 2012 Sonata Hybrid. The first one had so many engine issues that Hyundai replaced it with another 2012 Sonata Hybrid. I have taken it in 5 times.for the same issue. Around 20mph the car will not accelerate then it jerks forward. I almosy got hit on the highway because it wont accelerate. Several weeks ago the stop safely do not drive hybrid warning came on and thr car wouldnt go. Had ot towed. They found code p0717. They replaced input output speed sensors but the problem continues still. It also jerks when it changes from hybrid to gas. This car is dangerous. …”

NHTSA complaint #10849786, filed 2016-03, 51,000 miles

“In september 2015 the trans. Was replaced in the car. The car was kept for 1 week for repairs.I replaced a battery 12/13/2016, and have had to have at least 12 battery problems. The radio will go out, and within a week to 2 the battery is dead, resulting in my insurance company coming out to start my car. On may 1, 2017, I had a diagnostic done, and they could not find a problem. They recommended trying to replace the radio,but were not sure it would correct the problem. A radio was purchased/replaced 8/2/17,and the problem has continued. …”

NHTSA complaint #11089015, filed 2018-04

Related service bulletins

Fuel system: other model years

YearComplaintsShare of year
2024111%
2023320%
2022421%
202159%
202016%
2019240%
2018111%
201779%
201675%
201524%
20131211%
201253%
201122%

Other parts of the 2012 Hyundai Sonata Hybrid

Engine
68 complaints
Transmission and drivetrain
31 complaints
Brakes
25 complaints
Electrical system
23 complaints
Other or unknown
15 complaints
Vehicle speed control
13 complaints
Steering
10 complaints
Engine cooling
4 complaints
Body and structure
4 complaints
Visibility (wipers, defrost, mirrors)
4 complaints
Air bags
3 complaints
Hybrid propulsion system
3 complaints

← All problems reported for the 2012 Hyundai Sonata Hybrid

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology