2015 Hyundai Sonata: problems, recalls and what it’s worth
Known weak spot on this generation: Theta II 2.0T / 2.4L GDI engine. 9 recall campaigns to confirm with a dealer. A lot of owner complaints, 56% about engine & cooling.
Cold-start knock/rattle that fades as it warms, oil consumption, a check-engine light for the knock sensor. Confirm the KSDS software recall was performed and ask whether the engine was ever replaced.
Known problems on the 2015 Hyundai Sonata
Theta II 2.0T / 2.4L GDI engine $4,000–$7,000 to fix
If equipped with the 2.4L or 2.0T Theta II GDI (most were), this generation has a documented rod-bearing failure — knocking, then seizure or fire. Covered by huge recalls, a class-action settlement, and a knock-sensor software update (KSDS); a lifetime warranty applies to many, but only for the original-owner chain in some cases.
Check for: Cold-start knock/rattle that fades as it warms, oil consumption, a check-engine light for the knock sensor. Confirm the KSDS software recall was performed and ask whether the engine was ever replaced.
Basis: NHTSA recalls 15V568/17V226/others; Hyundai/Kia engine class-action settlement; KSDS campaign
Known patterns for this year and model, not findings about one car. A well-kept example may already have had the fix. Costs are rough US shop prices.
2015 Hyundai Sonata recalls
NHTSA lists 9 recall campaigns for the 2015 Hyundai Sonata. Repairs are free at a dealer for the brand, and a dealer can confirm by VIN which were already done.
- Lights
A turn signal that activates in the opposite direction of what was intended by the driver increases the risk of a crash.
Details 21V749000
Hyundai Motor America (Hyundai) is recalling certain 2015-2017 Sonata, 2016-2017 Sonata Hybrid, and Sonata Plug-In Hybrid vehicles. The Smart Junction Box (SJB) software logic may not properly interpret the signals received from the multifunction switch, which could cause the turn signal to activate in the opposite direction of what the driver intended.
Fix: Dealers will update the SJB software, free of charge. Owner notification letters were mailed November 19, 2021. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 210.
- Brakes
If the parking brake indicator is not illuminated when the parking brake is applied, the driver may operate the vehicle with the parking brake partially engaged, increasing the risk of a crash.
Details 17V359000
Hyundai Motor America (Hyundai) is recalling certain 2015-2016 Sonata and Genesis vehicles. In the affected vehicles, the warning light to indicate that the parking brake is applied may intermittently not illuminate in the dash due to corrosion in the switch.
Fix: Hyundai will notify owners, and dealers will replace the parking brake switch, free of charge. The recall began on August 4, 2017. Owners may contact Hyundai customer service at 1-855-671-3059. Hyundai's number for this recall is 164.
- Airbags
An air bag that does not inflate increases the risk of injury.
Details 16V232000
Hyundai Motor Company (Hyundai) is recalling certain model year 2015-2016 Sonata vehicles manufactured May 29, 2014 to February 11, 2016, 2017 Elantra vehicles manufactured January 12, 2016 to February 22, 2016, and one 2016 Sonata Hybrid vehicle manufactured October 15, 2015. In these vehicles, the driver's frontal air bag may be missing a chemical enhancer required for the second stage air bag deployment, resulting in the second stage not deploying in certain crashes. The primary stage will deploy as intended.
Fix: Hyundai will notify owners, and dealers will replace the driver's frontal air bag module, free of charge. The recall began on May 5,2016. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 144.
- Visibility & wipers
If the sunroof detaches from the vehicle it could become a road hazard, increasing the risk of a crash.
Details 16V726000
Hyundai Motor America (Hyundai) is recalling certain model year 2015-2016 Sonata Hybrid vehicles manufactured December 8, 2014, to August 18, 2015, and Hyundai Sonata vehicles manufactured May 28, 2014, to March 18, 2016, equipped with the panoramic sunroof option. Due to a bonding issue with the sunroof wind deflector, the sunroof panel on the affected vehicles may detach while driving.
Fix: Hyundai will notify owners, and dealers will repair the wind deflector anchor plate, free of charge. The recall began December 2016. Owners may contact Hyundai customer service at 1-800-633-5151. Hyundai's number for this recall is 152.
- Seat belts
If the front passenger seat belt cannot be latched, an occupant sitting in the front passenger seat has an increased risk of injury in the event of a crash.
Details 15V414000
Hyundai Motor America (Hyundai) is recalling certain model year 2015 Sonata vehicles manufactured April 25, 2014, to December 4, 2014. The affected vehicles have a front passenger seat belt whose buckle latch assembly may prevent the front passenger from fastening the seat belt.
Fix: Hyundai will notify owners, and dealers will repair or replace the front passenger seat belt buckle, free of charge. The recall began on September 15, 2015. Owners may contact Hyundai customer service at 1-855-671-3059. Hyundai's number for this recall is 130.
- Electrical
If the driver is alerted there is a brake system malfunction, but not specifically with the ABS system, the driver may operate the vehicle unaware that the vehicle's brakes may lock up during hard braking, increasing…
Details 15V678000
Hyundai Motor America (Hyundai) is recalling certain model year 2015-2016 Sonata vehicles manufactured May 28, 2014, to August 21, 2015. The affected vehicles are equipped with an Antilock Braking System (ABS) warning light intended to warn the driver if there is an ABS malfunction. In the event of an ABS malfunction, the Brake System warning light will illuminate, but the ABS warning light will not illuminate. Since the vehicles have ABS malfunction lights that do not illuminate, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 135, "Light Vehicle Brake Systems."
Fix: Hyundai will notify owners, and dealers will update the ABS control unit software, free of charge. The recall is expected began on November 30, 2015. Owners may contact Hyundai customer service at 1-855-671-3059. Hyundai's number for this recall is 134.
Show all 9
- Steering
The reduction of power steering assist can increase the steering effort needed, increasing the risk of a crash.
Details 14V325000
Hyundai Motor Company (Hyundai) is recalling certain model year 2015 Sonata vehicles manufactured May 2, 2014, through May 23, 2014. A poor connection within the vehicle's wiring harness may result in a reduction of steering assist from the vehicle's motor driven power steering system or the inability to move the vehicle's shifter from the Park position.
Fix: Hyundai notified dealers to suspend sales of affected Sonata vehicles and has published recall bulletin 14-01-024 providing a service procedure to repair the affected vehicles. On June 7, 2014 Hyundai began to contact the affected retail customers. Owners may contact Hyundai customer service at 1-800-633-5151. Hyundai's number for this recall is 119.
- Brakes
If a brake caliper fractures, brake effectiveness would be reduced, lengthening to distance required to stop the vehicle, increasing the risk of a crash.
Details 14V368000
Hyundai Motor Company (Hyundai) is recalling certain model year 2015 Sonata vehicles manufactured April 25, 2014, through June 16, 2014. Due to a manufacturing error, one or both of the front brake calipers may fracture.
Fix: Hyundai contacted the affected owners on June 19, 2014 and instructed them not to drive their vehicles. Hyundai dealers will replace the affected brake calipers, free of charge. The recall began on September 12, 2014. Owners may contact Hyundai customer service at 1-800-633-5151. Hyundai's number for this recall is 120.
- Transmission & drivetrain
If the left axle shaft separates from the transaxle, the vehicle may stop moving, increasing the risk of a crash.
Details 14V784000
Hyundai Motor America (Hyundai) is recalling certain 1.6 liter model year 2015 Sonata vehicles manufactured August 29, 2014, to October 28, 2014. The affected vehicles may have been assembled with an incorrect left axle shaft which may result in the shaft separating from the transaxle differential.
Fix: Hyundai will notify owners, dealers will inspect and replace the axle shaft, as necessary, free of charge. Owners may contact Hyundai customer service at 1-800-633-5151. Hyundai's number for this recall is 126.
2015 Hyundai Sonata safety investigations and free repairs
No open safety investigations.
Free repairs to ask about (warranty extensions):
- Paint: Certain vehicles may exhibit excessive paint peeling or bubbling of the primer/paint film on the exterior metal body panels: hood, fender(s), roof, door(s), quarter panel(s), and tailgate/trunk.
- Engine: Certain Santa Fe (TMA), Santa Fe Sport (AN), Sonata (LFA), and Tucson (TL) vehicles equipped with Theta II engines may exhibit elevated engine-out emissions.
- Exhaust and emissions: Following completion of Service Campaign 9C2 (Theta II Emissions Improvement), certain vehicles may exhibit a brief hesitation or rough shifting condition during cold start operation.
A dealer for the brand can check these by VIN.
Source: NHTSA, Sep 24, 2026.
2015 Hyundai Sonata safety and fuel
From NHTSA’s crash tests and the EPA’s fueleconomy.gov.
What owners complain about
1,144 complaints filed with NHTSA for this year and model, which is a lot.
Share of complaints that mention each area. One complaint can mention several.
What a 2015 Hyundai Sonata is worth
Rough trade-in values — roughly what a dealer would pay — by mileage, from published trade-in guides. Private sales and dealer prices run higher. For the exact car, add its VIN.
| Mileage | Trade-in (rough) |
|---|---|
| 80,000 mi | $5,600 |
| 120,000 mi | $4,485 |
From new to now
What each Hyundai Sonata model year trades in for today at typical mileage.
Typical mileage = 12,000 miles a year; values between two published mileages are estimated in a straight line.
Other Hyundai Sonata years
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