The Sonata's best-known problem is engine failure from connecting rod bearing wear in 2011–2014 models with the 2.0L and 2.4L Theta II engine (recalls 15V568 and 17V226). Hyundai now gives 2011–2019 Theta II Sonatas a lifetime short-block warranty once the KSDS software is installed. Other major recalls cover air bag control units, seat belts and fuel leaks.
CarWhere lists 12 documented Sonata issues, including 10 NHTSA safety recalls, each with affected years, powertrains, symptoms, pre-purchase checks and a source. Recall entries come from NHTSA's recall dataset on the DOT open-data portal, which may not list every campaign, so run the specific VIN through NHTSA's recall lookup.
YF (2011–2014) Sonata problems
2011–2012 Sonata connecting rod wear can cause engine failure (recall 15V568) (2011–2012 (built at Hyundai Motor Manufacturing Alabama))
Safety recall- Generation:
- YF (2011–2014)
- Years:
- 2011–2012 (built at Hyundai Motor Manufacturing Alabama)
Metal debris left from machining the crankshaft could restrict oil flow to the connecting rod bearings, damaging them and possibly causing the engine to fail and stall. It covers 2011–2012 Sonatas built in Alabama from December 11, 2009, to April 12, 2012, with the 2.0L or 2.4L GDI engine. Dealers inspect and replace the engine as needed, free of charge, and Hyundai extended the short-block warranty on these cars to 10 years/120,000 miles for original and later owners.
Symptoms
- Metallic, rhythmic knocking from the engine
- Check-engine or oil-pressure light
- Engine stall
Check before buying
- Run the 17-digit VIN through NHTSA's recall lookup (nhtsa.gov/recalls) and confirm the campaign shows as remedied
- Look for Hyundai recall 132 as completed in the service history
- Confirm the KSDS update (campaign 953 or 966) is also done
NHTSA recall: 15V568 (2015-09-10) · 470,000 vehicles in the campaign
Sources: [1][2]
2013–2014 Sonata engine bearing wear can seize the engine (recall 17V226) (2013–2014)
Safety recall- Generation:
- YF (2011–2014)
- Years:
- 2013–2014
Machining errors during engine manufacturing could cause the bearings inside the engine to wear early, which may lead to engine seizure while driving. Dealers inspect the engine and replace the short block as needed, free of charge. The 572,000-vehicle count covers the whole campaign, including the Santa Fe Sport.
Symptoms
- Engine knock that increases with rpm
- Reduced power or hesitation
- Check-engine or oil-pressure light
Check before buying
- Run the 17-digit VIN through NHTSA's recall lookup (nhtsa.gov/recalls) and confirm the campaign shows as remedied
- Look for Hyundai recall 162 as completed
- Ask a Hyundai dealer for the repair order showing the recall work was completed
NHTSA recall: 17V226 (2017-03-31) · 572,000 vehicles in the campaign
Sources: [3][2]
Theta II engine: lifetime short-block warranty after KSDS update (2011–2019)
Major repair- Generation:
- YF (2011–2014) and LF (2015–2019)
- Years:
- 2011–2019
Under the Theta II class settlement (final approval June 10, 2021), 2011–2019 Sonatas with the 2.0L or 2.4L Theta II GDI engine get a lifetime warranty on the short block for original and later owners, as long as the free Knock Sensor Detection System (KSDS) software update is done. KSDS detects vibration from abnormal bearing wear, flashes the check-engine light and limits power so the car can be driven to a dealer. Cash claim deadlines under the settlement closed August 9, 2021.
Symptoms
- Flashing check-engine light and reduced power (Engine Protection Mode)
- Engine knocking
- Speed limited to roughly 60–65 mph in protection mode
Check before buying
- Confirm Service Campaign 953 or 966 (KSDS) shows as completed at autoservice.hyundaiusa.com/campaignhome
- Ask for records of any earlier engine replacement
- Have a dealer inspect any engine that knocks
Sources: [4][2][5]
Air bag control unit can short and disable air bags (recall 18V137) (2011–2013 Sonata, 2011–2012 Sonata Hybrid)
Safety recall- Generation:
- YF (2011–2014)
- Years:
- 2011–2013 Sonata, 2011–2012 Sonata Hybrid
- Powertrain:
- Not specified in the recall
In a crash, the air bag control unit can short-circuit and stop the front air bags, side air bags and seat belt pretensioners from deploying. Hyundai first recalled 154,753 2011 Sonatas and then expanded the campaign to 2012–2013 Sonata and 2011–2012 Sonata Hybrid models. Dealers install an external wire filter kit, free of charge.
Symptoms
- Air bag warning light, though the fault may give no warning
Check before buying
- Run the 17-digit VIN through NHTSA's recall lookup (nhtsa.gov/recalls) and confirm the campaign shows as remedied
- Ask a Hyundai dealer for the repair order showing the recall work was completed
NHTSA recall: 18V137 (2018-02-27) · 580,058 vehicles in the campaign
Sources: [6]
Front seat belt linkages can detach from pretensioners (recall 17V152) (2011–2014 Sonata, 2011–2015 Sonata Hybrid)
Safety recall- Generation:
- YF (2011–2014)
- Years:
- 2011–2014 Sonata, 2011–2015 Sonata Hybrid
- Powertrain:
- Not specified in the recall
The front seat belt linkages can come loose from the anchor pretensioners, so the belts may not hold occupants in a crash. Dealers inspect and repair the connection, free of charge. A follow-up recall, 17V617, had dealers re-check cars already repaired and fit a warning label to prevent the linkage from detaching again.
Symptoms
- Seat belt that feels loose at the lower anchor near the seat
Check before buying
- Run the 17-digit VIN through NHTSA's recall lookup (nhtsa.gov/recalls) and confirm the campaign shows as remedied
- Confirm both 17V152 and the follow-up 17V617 are recorded as completed
- Ask a Hyundai dealer for the repair order showing the recall work was completed
NHTSA recall: 17V152 (2017-03-08) · 977,778 vehicles in the campaign
Sources: [7][8]
Shift cable can detach, risking rollaway (recall 14V434) (2011–2014)
Safety recall- Generation:
- YF (2011–2014)
- Years:
- 2011–2014
- Powertrain:
- Not specified in the recall
The transmission shift cable can come off the shift lever pin, so the gear the transmission is in may not match the gear shown. The car may move in an unexpected direction, or roll away after the driver selects Park. Dealers inspect and repair the cable connection, free of charge.
Symptoms
- Gear indicator does not match how the car moves
- Shifter feels loose or disconnected
- Car rolls when Park is selected
Check before buying
- Always set the parking brake until the recall is confirmed done
- Run the 17-digit VIN through NHTSA's recall lookup (nhtsa.gov/recalls) and confirm the campaign shows as remedied
- Ask a Hyundai dealer for the repair order showing the recall work was completed
NHTSA recall: 14V434 (2014-07-18) · 883,000 vehicles in the campaign
Sources: [9]
Sonata Hybrid engine bearing wear can cause stall or fire (recall 20V746) (2011–2013 and 2016 (Sonata Hybrid); 2017 Sonata Hybrid under 21V727)
Safety recall- Generation:
- YF (2011–2014) and LF (2015–2019)
- Years:
- 2011–2013 and 2016 (Sonata Hybrid); 2017 Sonata Hybrid under 21V727
- Powertrain:
- 2.4L Theta II MPI Hybrid (2011–2015); 2.0L Nu GDI Hybrid (2016–2019)
The connecting rod bearings in the engine can wear early and damage it, which can cause a stall or an engine fire. Dealers inspect the engine, replace it if bearing damage is found and install the KSDS software, free of charge. Recall 21V727 covers 2017 Sonata Hybrids for the same problem. The Engine II settlement adds a 15-year/150,000-mile warranty for connecting-rod-bearing damage on 2011–2015 Sonata Hybrid and 2016–2019 Sonata Hybrid and Plug-in Hybrid models.
Symptoms
- Engine knocking that rises with rpm
- Check-engine or oil-pressure warning light
- Loss of power or stall
Check before buying
- Run the 17-digit VIN through NHTSA's recall lookup (nhtsa.gov/recalls) and confirm the campaign shows as remedied
- Look for Hyundai recalls 198 or 209 and the KSDS campaign as completed
- Ask a Hyundai dealer for the repair order showing the recall work was completed
NHTSA recall: 20V746 (2020-12-01) · 128,948 vehicles in the campaign
Sources: [10][11][12][2]
High-pressure fuel pipe may leak after engine replacement (recall 18V934) (2011–2014 (cars that had engines replaced under 15V568 or 17V226))
Safety recall- Generation:
- YF (2011–2014)
- Years:
- 2011–2014 (cars that had engines replaced under 15V568 or 17V226)
On cars that got a new engine under recalls 15V568 or 17V226, the high-pressure fuel pipe at the fuel pump outlet may have been damaged, misaligned or tightened incorrectly during the swap, letting fuel leak and raising the fire risk. Dealers inspect and replace the pipe as needed, free of charge. The 150,730-vehicle count also includes the Santa Fe Sport.
Symptoms
- Fuel smell after an engine replacement
- Fuel residue on top of the engine
Check before buying
- Ask whether the engine was replaced under a recall
- Run the 17-digit VIN through NHTSA's recall lookup (nhtsa.gov/recalls) and confirm the campaign shows as remedied
- Ask a Hyundai dealer for the repair order showing the recall work was completed
NHTSA recall: 18V934 (2018-12-28) · 150,730 vehicles in the campaign
Sources: [13]
Low-pressure fuel hose can crack from engine heat (recall 22V312) (2013–2014)
Safety recall- Generation:
- YF (2011–2014)
- Years:
- 2013–2014
- Powertrain:
- Not specified in the recall
The low-pressure fuel hose between the low-pressure pump and the direct-injection pump can crack over time from engine-bay heat and leak fuel, raising the fire risk. This campaign replaced recall 20V121, which used heat-protective tape when no damage was found; dealers now replace the hose, free of charge.
Symptoms
- Fuel smell in or around the car
- Visible fuel leak in the engine bay
Check before buying
- Run the 17-digit VIN through NHTSA's recall lookup (nhtsa.gov/recalls) and confirm the campaign shows as remedied
- If only 20V121 work is on record, confirm 22V312 has also been completed
- Ask a Hyundai dealer for the repair order showing the recall work was completed
NHTSA recall: 22V312 (2022-05-06) · 215,171 vehicles in the campaign
Sources: [14][15]
Turn-key Sonata models need the free anti-theft software upgrade (campaign 993) (2011–2022)
Moderate- Generation:
- YF (2011–2014), LF (2015–2019) and DN8 (2020–present)
- Years:
- 2011–2022
- Powertrain:
- All engines with a turn-key ignition and no engine immobilizer
Hyundai offers a free anti-theft software upgrade, service campaign 993, for 2011–2022 Hyundai models built with a traditional turn-key ignition and no engine immobilizer, after a theft method spread on social media. Once installed, locking the doors with the key fob arms the factory alarm and an ignition-kill feature, so the car cannot be started that way. Hyundai says vehicles with push-button start, or built after November 2021, already have an immobilizer and are not affected. A Sonata with a turn-key ignition from these years may qualify; the VIN check settles it.
Symptoms
- Vehicle starts with a mechanical key in a turn-key ignition (no push-button start)
- No record of campaign 993 in the service history
Check before buying
- Enter the VIN on Hyundai's campaign 993 site (autoservice.hyundaiusa.com/Campaign993) to see whether the upgrade applies and is done
- Confirm the alarm and ignition-kill feature arm when you lock the doors with the fob
- Ask a Hyundai dealer to install the upgrade if it is still open; it is free
Sources: [18][19][20]