Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 17, 2026.
Fuel economy
21–25 mpgcombined; city 18–21, highway 27–31; every version of this model year
Five years of fuel
$12,990–$15,470U.S. average; Ohio $11,610–$13,820 at local prices; every version of this model year; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA overall safety rating
Not ratedNHTSA has no overall rating for this year
Owners have filed 1,047 complaints with NHTSA about the 2006 Sonata. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Air bags
435
19
1
23
Visibility
156
1
0
0
Seat belts
102
6
0
8
Electrical system
86
0
1
0
Suspension
86
1
1
1
Electronic stability control (ESC)
57
1
0
3
Service brakes
51
4
1
3
Exterior lighting
45
0
0
0
Engine
44
2
3
5
Structure
44
2
0
2
Vehicle speed control
39
13
0
3
Steering
35
0
0
0
18 more parts
Service brakes, hydraulic
33
2
0
1
Engine and engine cooling
30
0
1
3
Unknown or other
30
0
4
2
Visibility/wiper
30
0
0
0
Power train
22
0
0
0
Fuel system, gasoline
13
1
1
1
Seats
13
2
0
2
Equipment
11
0
0
0
Wheels
10
0
0
0
Fuel/propulsion system
9
0
0
0
Tires
8
0
0
0
Latches/locks/linkages
6
0
0
0
Electronic stability control
2
0
0
0
Child seat
1
0
0
0
Equipment adaptive/mobility
1
0
0
0
Lane departure
1
0
0
0
Parking brake
1
0
0
0
Traction control system
1
0
0
0
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 9 recall campaigns for the 2006 Sonata over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
Service brakes, hydraulic: antilock/traction control/electronic limited slip
Hyundai Motor America (Hyundai) is recalling certain 2006-2011 Hyundai Azera and 2006 Hyundai Sonata vehicles. Water may enter the Anti-lock Brake (ABS) Module and result in an electrical short .
Risk: An electrical short within the ABS Module may cause an engine compartment fire, even when the car is turned off, increasing the risk of an injury.
Remedy: Hyundai will notify owners, and dealers will install a relay in the vehicle's main junction box to prevent the risk of an ABS short-circuit while the car is turned off, free of charge. The recall began on February 19, 2018. Owners may call Hyundai at 1-800-633-5151. Hyundai's number for this recall is 172.
Hyundai is recalling certain model year 2006-2010 Sonata vehicles manufactured March 1, 2005, through January 21, 2010; and model year 2006-2011 Azera vehicles manufactured September 27, 2005, through November 22, 2010 originally sold in, or currently registered in, Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Wisconsin and the District of Columbia. Road salt and water can enter portions of the rear crossmember, leading to corrosion of the crossmember steel. This may lead to detachment of one of the rear control arms.
Risk: Control arm separation may suddenly change the rear wheel alignment, affecting the handling of the vehicle, increasing the risk of a crash.
Remedy: Hyundai will notify owners, and dealers will repair or replace the crossmember assembly. The recall began on October 8, 2013. Owners may contact Hyundai Customer Care Center at 1-800-633-5151. Hyundai's recall number is 113.
HYUNDAI IS RECALLING 3,011 MODEL YEAR 2005-2007 ELANTRA, TUCSON, SONATA, AZERA AND ACCENT VEHICLES. A MALFUNCTIONING STOP LAMP SWITCH MAY CAUSE THE BRAKE LIGHTS TO FAIL TO ILLUMINATE WHEN THE BRAKE PEDAL IS DEPRESSED OR MAY CAUSE THE BRAKE LIGHTS TO REMAIN ILLUMINATED WHEN THE BRAKE PEDAL IS RELEASED. A DEFECTIVE STOP LAMP SWITCH MAY ALSO AFFECT THE OPERATION OF THE BRAKE-TRANSMISSION SHIFT INTERLOCK FEATURE SO THE TRANSMISSION WOULD NOT BE ABLE TO BE SHIFT OUT OF THE "PARK" POSITION. IT MAY ALSO CAUSE THE ELECTRONIC STABILITY CONTROL (ESC) MALFUNCTION LIGHT TO ILLUMINATE, AND IT MAY NOT DEACTIVATE THE CRUISE CONTROL WHEN THE BRAKE PEDAL IS DEPRESSED.
Risk: ANY OF THESE MALFUNCTIONS COULD LEAD TO A CRASH.
Remedy: DEALERS WILL REPLACE THE STOP LAMP SWITCH FREE OF CHARGE. THE RECALL BEGAN ON SEPTEMBER 2, 2009. OWNERS MAY CONTACT HYUNDAI OF PUERTO RICO CUSTOMER SERVICE AT 1-787-999-4310.
HYUNDAI IS RECALLING 532,633 MY 2006-2007 ACCENT, ENTOURAGE, SONATA, MY 2007 AZERA, ELANTRA AND SANTA FE, MY 2005-2007 TUCSON AND MY 2007-2008 VERACRUZ VEHICLES. THE STOP LAMP SWITCH IN THE AFFECTED VEHICLES MAY MALFUNCTION. A MALFUNCTIONING STOP LAMP SWITCH MAY CAUSE THE BRAKE LIGHTS TO NOT ILLUMINATE WHEN THE BRAKE PEDAL IS DEPRESSED OR MAY CAUSE THE BRAKE LIGHTS TO REMAIN ILLUMINATED WHEN THE BRAKE PEDAL IS RELEASED. A STOP LAMP SWITCH MALFUNCTION MAY ALSO AFFECT THE OPERATION OF THE BRAKE-TRANSMISSION SHIFT INTERLOCK FEATURE SO THE TRANSMISSION SHIFTER WOULD NOT BE ABLE TO BE SHIFTED OUT OF THE PARK POSITION. IT MAY ALSO CAUSE THE ELECTRONIC STABILITY CONTROL (ESC) MALFUNCTION LIGHT TO ILLUMINATE, AND IT MAY NOT DEACTIVATE THE CRUISE CONTROL WHEN THE BRAKE PEDAL IS DEPRESSED.
Risk: ANY OF THESE MALFUNCTIONS, ALONE OR IN COMBINATION, MAY LEAD TO A CRASH.
Remedy: DEALERS WILL REPLACE THE STOP LAMP SWITCH FREE OF CHARGE. THE RECALL BEGAN ON JUNE 29, 2009. OWNERS MAY CONTACT THE HYUNDAI CUSTOMER ASSISTANCE CENTER AT 1-800-633-5151.
HYUNDAI IS RECALLING 393,308 MY 2006-2008 SONATA VEHICLES EQUIPPED WITH AN ADVANCED AIR BAG SYSTEM WHICH FEATURES AN OCCUPANT CLASSIFICATION SYSTEM (OCS) IN THE RIGHT FRONT SEAT. THE PURPOSE OF THE OCS IS TO DISABLE THE RIGHT PASSENGER SEAT FRONT AIR BAG WHEN IT DETECTS THE PRESENCE OF A CHILD RESTRAINT SYSTEM OR SMALL CHILD IN THE RIGHT FRONT SEAT. THE RIGHT FRONT AIR BAG IS DISABLED TO PREVENT INJURIES TO A CHILD THAT MAY RESULT FROM A RIGHT FRONT AIR BAG INFLATION DURING A CRASH.
Risk: MISCLASSIFICATION OF A SMALL STATURE ADULT AS A CHILD IN THE RIGHT FRONT PASSENGER SEAT MAY CAUSE THE RIGHT FRONT AIR BAG TO NOT INFLATE IN AN ACCIDENT THAT MERITS AIR BAG DEPLOYMENT AND MAY RESULT IN INJURY TO THE RIGHT FRONT OCCUPANT.
Remedy: DEALERS WILL VERIFY THAT THE OCS DOES NOT PROPERLY RECOGNIZE A PROPERLY SEATED ADULT OCCUPANT. AFTER VERIFICATION, DEALERS WILL REMOVE THE RIGHT FRONT SEAT CUSHION ASSEMBLY AND SHIP IT TO AN EVALUATION AND REPAIR FACILITY. THIS FACILITY WILL EVALUATE AND REPAIR OR REPROGRAM THE SEAT CUSHION AND OCS AS NECESSARY. THE RECALL IS EXPECTED TO BEGIN ON OR ABOUT MAY 26, 2008. OWNERS MAY CONTACT HYUNDAI AT 1-800-633-5151.
ON CERTAIN PASSENGER VEHICLES, THE AIR BAG WARNING LABEL INSTALLED ON THE SUNVISORS HAD LOST ADHESION TO THE SUNVISORS AND HAD DISTORTED OR SEPARATED FROM THE SUN VISORS.
Risk: IF THE LABELS ARE DISTORTED OR MISSING, THE DRIVER OR FRONT SEAT PASSENGER WILL NOT HAVE INFORMATION AVAILABLE THAT MAY HELP PROTECT THEM IN THE EVENT OF A CRASH.
Remedy: DEALERS WILL REPLACE THE SUNVISOR ASSEMBLIES FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 2, 2006. OWNERS MAY CONTACT HYUNDAI AT 1-800-633-5151.
ON CERTAIN PASSENGER VEHICLES, THE INNER BEZELS OF THE HEADLAMPS WERE NOT PROPERLY ASSEMBLED WHICH MAY CAUSE THE TURN SIGNAL LENSES TO BE IMPROPERLY POSITIONED.
Risk: AN IMPROPERLY POSITIONED TURN SIGNAL LENS MAY REDUCE THE INTENSITY OF THE TURN SIGNAL ILLUMINATION, REDUCING ITS VISIBILITY TO ONCOMING TRAFFIC, WHICH MAY RESULT IN A CRASH.
Remedy: DEALERS WILL REPLACE THE LEFT AND RIGHT HEADLAMP ASSEMBLIES FREE OF CHARGE. THE RECALL BEGAN ON JUNE 26, 2006. OWNERS MAY CONTACT HYUNDAI AT 1-800-633-5151.
ON CERTAIN PASSENGER VEHICLES, THE FRONT SEAT BELT MAY INTERFERE WITH THE MANUAL SEAT BACK RECLINER KNOB AND COULD CAUSE THE FRONT MANUAL SEAT BACK RECLINER TO INADVERTENTLY RELEASE.
Risk: THE INADVERTENT RELEASE OF A FRONT SEAT BACK RECLINER MAY RESULT IN INJURY TO VEHICLE OCCUPANTS.
Remedy: DEALERS WILL REPLACE THE MANUAL SEAT BACK RECLINER KNOB(S) FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 14, 2005. OWNERS MAY CONTACT HYUNDAI AT 1-800-633-5151.
ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH 3.3 LITER ENGINES AND ELECTRONIC STABILITY CONTROL (ESC), THE ESC MAY HAVE BEEN PROGRAMMED TO BE OVERSENSITIVE TO THE ONSET OF OVERSTEERING WHILE DRIVING ON BANKED CURVES, CAUSING INADVERTENT APPLICATION OF THE FRONT OUTSIDE BRAKE WHEN ESC ACTIVATION MAY NOT BE NEEDED.
Risk: THIS MAY CAUSE THE VEHICLE TO SLOW AND MAY AFFECT THE PATH THAT THE VEHICLE IS TRAVELING. BRAKE APPLICATION CAUSED BY INADVERTENT ESC ACTIVATION MAY RESULT IN A CRASH.
Remedy: DEALERS WILL REPROGRAM THE ESC HYDRAULIC ELECTRONIC CONTROL UNIT. THE RECALL BEGAN ON JULY 29, 2005. OWNERS MAY CONTACT HYUNDAI AT 1-800-633-5151.
Carmakers sent NHTSA 89 service bulletins and notices that cover the 2006 Sonata, the latest on Oct 8, 2026. They tell dealers how to fix known issues.
The parts they mention most: power train (17), engine and engine cooling (15), equipment (11), electrical system (10), service brakes (6).
NHTSA defect investigations
Opening an investigation isn't a finding of a defect. Outcomes are as NHTSA's summary states them. A recall is shown as an investigation's outcome only where NHTSA's summary names it; other recalls NHTSA's file lists with it are marked as listed, not caused.
Investigation
Part
Opened
Status
Defect petition DP22003 Loss of Motive Power · covers 3 makes
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2006 Sonata.
These are searches on those sites; we don't copy or check their listings. Your ZIP is used for these links and never kept.
Specs
EPA class: large cars. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
Sonata Front-Wheel Drive
2.4 L, 4 cyl
Manual 5-spd
Regular Gasoline
21 / 31 / 25
Sonata Front-Wheel Drive
2.4 L, 4 cyl
Automatic 4-spd
Regular Gasoline
21 / 30 / 24
Sonata Front-Wheel Drive
3.3 L, 6 cyl
Automatic 5-spd
Regular Gasoline
18 / 27 / 21
Sources and dates
U.S. EPA fuel economy data, file of Sep 29, 2026
NHTSA owner complaints, file of Oct 17, 2026
NHTSA recalls, file of Oct 17, 2026
NHTSA manufacturer communications, file of Oct 17, 2026
NHTSA defect investigations, file of Oct 17, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data