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Hyundai Sonata HybridModel year report

2011 Hyundai Sonata Hybrid Problems

Compared with other Hyundai Sonata Hybrid years

Typical for this model

47/100 0.9× a typical year · 50 = typical

Nearby years with fewer complaints than typical and no open NHTSA investigation: 2014

Based only on NHTSA complaints, recalls and investigations. Not adjusted for how many vehicles were sold, and not a reliability rating. How this is calculated

Complaints
96filed with NHTSA
Median mileage
86,750miles, 78 complaints with mileage
Recalls
6campaigns on record
Trend
FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA crash rating
5 / 5stars overall
EPA fuel economy
36 mpgcombined, 2.4L 4-cyl · hybrid FWD · 34 city / 39 hwy

Sources: NHTSA records for the 2011 Hyundai Sonata Hybrid (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

What owners report

Owners of this model year most often describe engine problems — knocking noises, stalling, sudden loss of power and, in several cases, a dealer diagnosis that the engine must be replaced. A second frequent theme is a "Check Brake" warning that can come on while driving and leave reduced braking or power, along with steering noises and a loose feel in the wheel. Reports are spread across a wide mileage range, from under 20,000 miles to well past 150,000.

  1. Engine

    Engine noise, stalling and engine replacement

    • 29 complaints (30%)
    • median 103,500 mi at 7.9 yrs old (26 state mileage)
    • 1 mention a crash, fire or injury
    • filed 2014–2026

    Complaints describe a knocking or clunking sound that grows louder, followed by stalling, loss of power or failure to accelerate; some owners report the vehicle would not restart and had to be towed. Several say the dealer found metal debris in the oil or diagnosed that the engine needed replacement, with repair often not covered or limited to a short block with labor charged. Others mention smoke or oil loss when the failure occurred. Reported from roughly 10,000 to 180,000 miles, with many clustered between about 75,000 and 130,000 miles.

    Recall 20V7460004 related service bulletins

    What to check: Ask whether the engine or any short block has been replaced and whether recall 20V746000 was completed; have a pre-purchase inspection check for metal debris in the oil and for knocking sounds on start-up and under load.

    2 excerpts from owner complaints in NHTSA records

    “Charging system malfunctioned, complete engine and battery failure, unable to accelerate I was driving on the highway when the ready light started flashing on the dashboard and the battery level started dropping without the engine starting and recharging. I was then unable to accelerate the vehicle and was forced to pull over. I turned the car off and back on and the ready light flashed on and off then stayed off. …”

    NHTSA complaint #11162547, filed 2018-12, 103,000 miles

    “Vehicle was in motion on I-75. Began to make a loud noise. And started to stall. I pulled over tried to go again. Car wouldn't go over 30miles pulled over and called a tow truck. Dealership stated the engine went out.”

    NHTSA complaint #11191044, filed 2019-03, 170,140 miles
  2. Engine

    Hybrid drive loss with "Check Charging System" warning

    • 22 complaints (23%)
    • median 76,919 mi at 7.1 yrs old (21 state mileage)
    • 2 mention a crash, fire or injury
    • filed 2014–2026

    Owners describe the charging-system warning appearing while driving, followed by a rapid slowdown or complete loss of drive power, sometimes with the "Ready" light flashing. Many say that restarting the vehicle after pulling over restored normal operation, and that dealers could not reproduce the problem or find stored codes. Some complaints also mention battery drain and coolant loss around the same events. Mostly reported between about 35,000 and 160,000 miles, often during highway driving.

    2 related service bulletins

    What to check: Have the hybrid battery, safety plug and power relay assembly area inspected, and ask whether any stored codes related to the hybrid system have been read; note that a service bulletin describes diagnosis procedures for these components on this hybrid model.

    2 excerpts from owner complaints in NHTSA records

    “Check charging system and check brake light came on at 76000 miles driveing 65 MPH in the highway after 3 hours. Collant did not read hot, battery read dead. Vehichle quickly decellerated and I pulled over. Radiator blew neck off and several components of the cooloing system and hoses were melted there is a strong smell of fludge/fule based residue/combustion in cooling system that blew off neck. Battery so week I could not use the key to open a door or the trunk, or move seats. …”

    NHTSA complaint #10984281, filed 2017-05, 76,919 miles

    “Charging system malfunctioned, sensors melted in valve trane, radiator elbow and fill neck blew off, complete engine failure and battery failure. I have had a problem with the check brake light and an alarm going off. However, when I stopped driving and had it towed to the dealership they could find nothing. Prior to this incident, I took a photo of my dash, I had 76,499 miles and the coolant meter did not read hot. I had had the coolant system flushed at 65,000 miles, and I had all oil and fluids checked again after this incident. …”

    NHTSA complaint #10983503, filed 2017-05, 76,000 miles
  3. Brakes

    "Check Brake" warning with reduced braking

    Mentioned in 9 of 60 sampled complaints

    Complaints describe a chime and a "Check Brake" warning appearing while driving, after which the pedal can drop toward the floor or the brakes seem to lose most of their effectiveness until the car is shut off and restarted. Some owners report that the accelerator and brake pedals felt unresponsive together, and a few had the parking brake engage on its own at speed. Dealers variously replaced a wheel speed sensor or suggested ABS work, and some owners note the ABS recall repair was unavailable when they asked. Reported from about 45,000 to 156,000 miles, frequently during highway or stop-and-go driving.

    Recall 23V651000

    What to check: Confirm whether recall 23V651000 (ABS module) was performed, check for ABS warning or stored codes, and have brake fluid level and the ABS module inspected before buying.

    2 excerpts from owner complaints in NHTSA records

    “Check brake warning display 2011 Hyundai Sonata Hybrid. When driving the check brake signal comes on and shuts down the car and render it driveless until I shut off the engine and restart it .we chang new own 12 v battery oem parts . Still have the problem check brake signal come on .”

    NHTSA complaint #11221385, filed 2019-06, 77,940 miles

    “I was driving on the freeway at approx. 60 MPH and the parking brake suddenly engaged. The dash alarm went off and the car starting making terrible grinding noises and swerving lane to lane. I was able to fight it and make it to the right shoulder. After turning the car off and on again it disengaged and I was able to drive it for a short distance before it happened again. I had it towed to my house and will take it to the dealer on monday.”

    NHTSA complaint #11099362, filed 2018-06, 66,000 miles
  4. Steering

    Steering noise, vibration and loose feel

    • 17 complaints (18%)
    • median 66,584 mi at 6.6 yrs old (13 state mileage)
    • 1 mention a crash, fire or injury
    • filed 2014–2024

    Owners describe clunking, rattling or knocking from the steering column, especially over rough roads or when turning, and some report the wheel vibrating or becoming tight at highway speed. Several say a dealer told them this is a common issue on the model, and that the repair involved a steering coupler; a few describe the wheel becoming very hard to control or seizing after start-up. Some owners ask that the coupler repair be extended beyond the mileage limit they were quoted. Mostly reported between about 45,000 and 130,000 miles.

    What to check: Turn the wheel while stationary and over rough pavement to listen for clunks, and ask whether the steering coupler has been replaced.

    2 excerpts from owner complaints in NHTSA records

    “The vehicle pulls to the left during acceleration after adjustment at the dealership. The vehicle pulled to the right durring acceleration when brought to the dealer for repair. The dealer told me no problem with the steering of these vehicles had been reported. I found out by searching the internet this problem is a know defect with this make and model. I am turning to you because the dealer is refusing to correct the problem and tried to blame it on a flat tire and ruined rim as a result of hitting a curb. …”

    NHTSA complaint #10568413, filed 2014-02, 21,000 miles

    “Taking my car to the dealership on dec. 1 to get seatbelt recalls addressed and requested that they check my steering wheel issue. The steering clanks and rattles when turning and when going over rough roads it is terribly noisy. Driving over 60 causes the steering wheel to rattle and vibrate too. It is just a scary sound and feeling to be driving and thinking your steering wheel might fly off and you'll go heading into the woods! They said they have a lot of complaints about this same issue and I am not alone. …”

    NHTSA complaint #11153104, filed 2018-11, 89,000 miles
  5. Transmission and drivetrain

    Transmission slip and loss of drive

    • 9 complaints (9%)
    • median 99,750 mi at 6.8 yrs old (8 state mileage, few)
    • filed 2014–2019

    Complaints describe jerking or slipping during shifts and moments where the car would not move or stopped accelerating, in some cases requiring a tow. Several owners report the transmission was replaced or rebuilt more than once, and one says a dealer attributed a code to the transmission while the owner questioned whether the hybrid motor was involved. Reported between about 60,000 and 130,000 miles.

    1 related service bulletin

    What to check: Test drive at low and highway speeds for jerking or delayed engagement, and ask for the service history showing any transmission or hybrid drive repairs.

    2 excerpts from owner complaints in NHTSA records

    “The first incident that worried me with my vehicle was when I was exiting out of a parking lot. I reversed out successfully, but when putting the vehicle in drive the instrument cluster showing whether I was in drive, park etc. Went out completely. I had to put the car in a park position (instrument cluster was still blank) and restart the car. I went to my local Hyundai dealer to have it checked out and was told it was a faulty transmission cable. I paid to have it fixed. …”

    NHTSA complaint #11101897, filed 2018-06, 104,000 miles

    “I am experiencing a second issue with the transmission in my 2011 hybrid sonata. The transmission died once at around 80,000 miles and was rebuilt by Hyundai approximately 2 years ago. At the time it originally failed, my transmission experienced the same symptoms that many other owners complained about before it finally experienced a total failure and was dead on the road. Recently (now at 120k miles) my car has started showing the same symptoms that preceded the original failure. …”

    NHTSA complaint #11011511, filed 2017-07, 121,000 miles

Buying note. This model year shows a fairly wide range of reported problems, and engine and hybrid drive complaints are the ones to weigh most heavily; verify recall completions for the engine, ABS and seat belt campaigns and get a thorough inspection of engine noise, oil condition and hybrid system codes before committing.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.

NHTSA recorded 96 consumer complaints for the 2011 Hyundai Sonata Hybrid. 78 of the complaints include a mileage, and 15% of those were filed for vehicles with under 50,000 miles; the median is 86,750 miles. Of all complaints, 6 involved a crash, 5 a fire, 5 an injury, according to the filers. NHTSA lists 6 recall campaigns and 113 technical service bulletins for this model year. Compared with the other 7 Hyundai Sonata Hybrid model years that have at least 25 complaints and are old enough to compare, this one scores 47 out of 100, where 50 is a typical year for the model (typical for this model). The comparison allows for the era and for how long each year has had to collect complaints, but not for how many vehicles were sold.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Also reported: Wheels (3), Fuel system (2), Suspension (2), Engine cooling (1), Exterior lighting (1), Body and structure (1), Visibility (wipers, defrost, mirrors) (1).

Example complaints

Engine: “While driving on the highway I noticed a knocking sound radiating from my engine at speeds of 60 MPH it the noise increased and then the engine appeared to be failing. My gages where the rmp's reflect where not functioning either. Amongst the engine issue my power steering column is also rattling as if it is loose and steering is become difficult. It is frightening to not feel safe in your own vehicle.”

NHTSA complaint #11088909, filed 2018-04, 115,000 miles

Steering: “On saturday, july 14th, while on the florida turnpike northbound, and driving at approx. 70 MPH, the steering wheel started shaking, and I could hear some noise from the steering column. I immediately reduced my speed down to 50, and the steering wheel was still shaking, and the noise from the steering column was still there. I am a disabled veteran, and this is my only means of transportation to my appointments at the va hospital in west palm beach, florida which is approx. A 1/2 hour drive from my house.”

NHTSA complaint #11111462, filed 2018-07, 66,584 miles

Brakes: “As I was gently applying my brakes in heavy freeway traffic, going about 50mph, the brake pedal became soft and dropped to the floor. The brake failure warning light also started to flash and chime. I swerved off to the side of the road to avoid hitting the car in front of me and plowed through some plants on the shoulder prior to coming to a stop with my parking brake.”

NHTSA complaint #10547877, filed 2013-10, 54,000 miles

Electrical system: “We have had multiple issues with the car accelerating. The vehicle will not respond immediately when pressing the gas pedal. We have had the car worked on by Hyundai 12-15 different times and it continues to have the same issue time and time again. We do not feel safe in the vehicle. The last time that we had the issue was in october of this year and we have not been able to drive the vehicle since that time. Hyundai will not help us get out of the vehicle even though it has had the safety concerns. …”

NHTSA complaint #11162831, filed 2018-12, 151,000 miles

Mileage when problems were reported

15% of the 78 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 66,000 and 120,000 miles.

1%0–103%10–2512%25–5018%50–7524%75–10035%100–1508%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (78 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 86,750 miles.

Complaints by year filed

Trend: falling. Complaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.

’14’16’1820’20’22’24’26
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Crash test ratings

NHTSA's 5-Star Safety Ratings for the 2011 Hyundai Sonata Hybrid. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.

VersionOverallFrontalSideSide poleRollover
Sonata Hybrid · sedan FWD★★★★★5 / 4555 · 9.7% risk

Neighbouring years: 2012: same overall rating. A redesign between years can change both the car and the test.

Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.

Fuel economy and running cost

EPA ratings for each 2011 Hyundai Sonata Hybrid version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
Sonata Hybrid FWD2.4L 4-cyl · hybrid6-speed automatic343936$1,850

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2011 Hyundai Sonata Hybrid → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 113 on record; the latest 10 are shown.

See all 113 bulletins →

Other model years of the Hyundai Sonata Hybrid

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
202511—0547—Too new
2024915,3950—47—Too new
20231534,0000—52—Too new
20221916,9120552—Rising
20215528,274055231 · FewerRising
2020167,1501—52—Rising
201953,5000542—Not enough data
201899,5001542—Not enough data
20178166,000354246 · TypicalRising
201613364,000554181 · MoreFalling
20155450,500453753 · TypicalRising
20142888,00035372 · FewerRising
201310863,500453770 · MoreFalling
201215576,630653690 · MoreFalling
20119686,750653647 · TypicalFalling

All Hyundai Sonata Hybrid model years · Best and worst years by complaints

Frequently asked questions

What are the most common problems with the 2011 Hyundai Sonata Hybrid?

Owners of this model year most often describe engine problems — knocking noises, stalling, sudden loss of power and, in several cases, a dealer diagnosis that the engine must be replaced. The issues reported most often: Engine noise, stalling and engine replacement; Hybrid drive loss with "Check Charging System" warning; "Check Brake" warning with reduced braking.

How many NHTSA complaints does the 2011 Hyundai Sonata Hybrid have?

NHTSA recorded 96 consumer complaints for the 2011 Hyundai Sonata Hybrid as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2011 Hyundai Sonata Hybrid is reported most often?

Engine is named most often, in 40 complaints (42% of the total), followed by steering with 18.

Has the 2011 Hyundai Sonata Hybrid been recalled?

NHTSA lists 6 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

How did the 2011 Hyundai Sonata Hybrid do in NHTSA crash tests?

NHTSA's 5-Star Safety Ratings give the 2011 Hyundai Sonata Hybrid 5 out of 5 stars overall. Ratings from different model years are only comparable when the vehicle was not redesigned in between.

What gas mileage does the 2011 Hyundai Sonata Hybrid get?

The EPA rates the 2011 Hyundai Sonata Hybrid (Sonata Hybrid, 2.4L 4-cyl · hybrid) at 36 mpg combined, 34 city and 39 highway, with an estimated annual fuel cost of $1,850 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2011 Hyundai Sonata Hybrid reported?

Among the 78 complaints that include a mileage, the median is 86,750 miles and the middle half falls between 66,000 and 120,000 miles; 15% were filed for vehicles with under 50,000 miles.

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. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.