The 2021 Elantra is a mixed bag — the naturally-aspirated 2.0L is generally reliable, but the 1.6T has earned a reputation for catastrophic engine failures due to bearing and piston issues, often well before 100k miles. Transmission cooler leaks are common across both engines.
1.6L Turbo Engine Failure (Theta II family issues)
Occasional · high severity
Typical onset: 40,000-80,000 mi
Symptoms: Knocking or ticking noise from engine, Metal shavings in oil during change, Check engine light with misfire codes, Sudden loss of power or engine seizure, Excessive oil consumption between changes
Fix: Complete engine replacement or rebuild required. Rod bearings and piston rings fail prematurely due to manufacturing tolerances and debris. If caught early with bearing noise, a rebuild runs 25-35 hours labor plus machine work. Most owners end up with short block replacement (15-20 hours) or used engine swap (12-16 hours). Check if your VIN falls under extended warranty coverage — Hyundai has settled multiple lawsuits over Theta engines.
Estimated cost: $6,500-12,000
Transmission Oil Cooler Line Leaks
Common · medium severity
Typical onset: 30,000-70,000 mi
Symptoms: Transmission fluid puddle under vehicle (reddish fluid), Burnt transmission smell, Harsh or delayed shifting, Transmission overheating warning
Fix: The cooler lines corrode or develop pinhole leaks where they connect to the radiator. Line replacement is 2-3 hours, but if it's been leaking a while and contaminated the trans fluid or caused overheating, you're looking at a transmission flush (add 1.5 hours) or worse. Catch it early with regular undercar inspections.
Estimated cost: $350-800
Transmission Mount Failure
Occasional · low severity
Typical onset: 50,000-90,000 mi
Symptoms: Clunking when shifting from Park to Drive/Reverse, Excessive vibration at idle, Engine rocks forward noticeably during acceleration, Visible tearing in rubber mount
Fix: The driver-side transmission mount tears or separates. It's a 1.5-2 hour job — straightforward replacement. Not urgent but gets annoying and can stress other mounts if ignored.
Estimated cost: $250-450
Front Seat Recliner Mechanism Failure (Recall)
Occasional · high severity
Symptoms: Seat back suddenly reclines during driving or braking, Recliner handle feels loose or disconnected, Seat back won't lock in upright position
Fix: Covered under recall — the recliner assembly can disengage unexpectedly. Dealer replacement takes 1-2 hours per seat. Safety issue, so get it done even if it hasn't failed yet. Check your VIN on NHTSA site.
Estimated cost: $0 (recall)
Backup Camera Intermittent or Black Screen
Occasional · low severity
Symptoms: Backup camera shows black screen or 'no signal', Image freezes or pixelates, Guidelines missing or distorted, Works intermittently after car sits
Fix: Usually a failing camera module or corroded connector behind the trunk trim. There's a recall for some VINs, but many fall outside coverage. Camera replacement is 1 hour labor if not recall-covered. Sometimes a simple connector cleaning fixes it (0.3 hours diagnostic).
Estimated cost: $0-450
Windshield Wiper Motor Premature Wear
Rare · medium severity
Typical onset: 40,000-80,000 mi
Symptoms: Wipers move slowly or stop mid-cycle, Grinding or clicking noise from wiper motor, Wipers work on high speed only, Blown wiper fuse repeatedly
Fix: Motor gears strip or the armature burns out. Some batches had defective motors (windshield recall related to bonding, separate issue). Motor R&R is 1.5-2 hours. Not catastrophic but dangerous in rain.
Estimated cost: $300-550
Owner tips
If you own a 1.6T: change oil every 5k miles with quality synthetic and cut open the filter at every change to inspect for metal — early warning of bearing failure. Consider an oil analysis at 30k and 60k.
Inspect transmission cooler lines annually for corrosion, especially if you live in salt-belt states. A $20 inspection beats a $3k transmission.
Check all recall status by VIN before purchase — seat belts and camera recalls are safety-critical.
The 2.0L is a safe bet for a budget sedan; the 1.6T is a gamble unless it has documented extended warranty coverage for the engine — otherwise, walk away or budget for catastrophic failure.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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BACK OVER PREVENTION: SENSING SYSTEM: CAMERA · 24V879000
2024-11-21
Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Santa Fe, Santa Fe HEV, Elantra, Elantra HEV and 2022 Elantra N and Santa Fe PHEV vehicles. Due to a damaged printed circuit board, the rearview camera image may fail to display. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Consequence: A rearview image that does not display reduces the driver's visibility and increases the risk of a crash.
Remedy: Dealers will replace the rearview camera, free of charge. Owner notification letters were mailed January 14, 2025. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 271.
SEAT BELTS:FRONT · 22V354000
2022-05-19
Hyundai Motor America (Hyundai) is recalling certain 2020-2022 Accent, 2021-2022 Elantra, and 2021-2022 Elantra HEV vehicles. In the event of a crash, the front driver-side and/or passenger-side seat belt pretensioners may explode upon deployment.
Consequence: An exploding seat belt pretensioner can project metal fragments into the vehicle, strike vehicle occupants, and result in injury.
Remedy: Dealers will secure the seat belt pretensioner(s) with a cap, free of charge. Owner notification letters were mailed August 28, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 229. This recall expands and replaces NHTSA recall numbers 21V-796, 22V-069, 22V-218, and 22V-123 for Accent, Elantra, and Elantra HEV vehicles. All Accent, Elantra, and Elantra HEV vehicles already repaired under the previous recalls will need to have the new remedy completed.
SEAT BELTS:FRONT · 22V218000
2022-04-01
Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Elantra and 2020 Accent vehicles. In the event of a crash, the front driver and passenger-side seat belt pretensioners may explode upon deployment.
Consequence: Exploding seat belt pretensioners can project metal fragments into the vehicle, strike vehicle occupants, and result in injury.
Remedy: Dealers will replace the seat belt pretensioners, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed on May 31, 2022. A second notice will be sent once remedy parts become available. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 223. This recall is replaced by NHTSA recall number 22V-354. Vehicles already repaired under this recall will need to have the new remedy completed.
VISIBILITY:WINDSHIELD · 21V00M000
2021-12-28
Hyundai Motor America (Hyundai) is recalling certain 2020-2021 Santa Fe, 2021 Sonata, and Elantra vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in a crash.
Consequence: A windshield that detaches from a vehicle during a crash can increase the risk of injury.
Remedy: Dealers will remove and reinstall the front windshield panel, free of charge. Owner notification letters were mailed June 20, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 216.
SEAT BELTS:FRONT · 21V796000
2021-10-13
Hyundai Motor America (Hyundai) is recalling certain 2021 Elantra, Elantra HEV, Venue, Genesis GV80 and 2022 Genesis GV70 vehicles. In the event of a crash, the front driver-side and/or passenger-side seat belt pretensioner(s) may explode upon deployment.
Consequence: An exploding seat belt pretensioner could project metal fragments into the vehicle, striking vehicle occupants and resulting in injury.
Remedy: Dealers will replace the seat belt pretensioners, free of charge. Owner notification letters were mailed February 10, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's numbers for this recall are 211 and 009G. This recall is replaced by NHTSA recall numbers 22V-354 for Elantra and Elantra HEV vehicles, 22V-458 for Venue vehicles, and 23V-094 for Genesis vehicles. Elantra, Elantra HEV, Venue, and Genesis vehicles already repaired under this recall will need to have the new remedies completed.
SEATS:FRONT ASSEMBLY:RECLINER · 21V302000
2021-04-28
Hyundai Motor America (Hyundai) is recalling certain 2021 Elantra vehicles. The driver and front passenger seat back recliners may have been improperly welded.
Consequence: An improperly welded seat back recliner could separate from the seat back frame during a crash, increasing the risk of injury.
Remedy: Dealers will inspect and if necessary, replace the seat back frame assembly, free of charge. Owner notification letters were mailed on June 21, 2021. Owners may contact Hyundai customer service at 1-888-371-9460. Hyundai's number for this recall is 204.
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