My car was having an issue where it was losing all the coolant, causing my engine to overheat twice while driving down the highway. Unfortunately I couldn't find a leak anywhere and there was no fluid leaking in my garage. I lost an entire reservoir of coolant overnight. After taking my car to the dealership to get repaired, I was told that it was leaking my coolant into the exhaust system and bur…
2023 hyundai Sonata engine problems
moderate 12 complaints filed with NHTSA · avg repair $3,100
Complaints
12
Recalls
0
Crashes
0
Avg fix
$3,100
What owners are reporting 5 most recent
I am reporting a serious coolant system defect on my 2023 Hyundai Sonata Hybrid with about 13,500 miles. The vehicle develops an internal coolant leak while driving. Coolant burns off and white steam/smoke comes out of the exhaust, especially during acceleration. When this happens, the coolant level drops quickly, the interior heater stops working, and the car soon displays an engine overheating w…
Vehicle’s front collision sensor popped up on dash, vehicle lost all power. Almost was hit by a group a semi trucks hauling a wide load that wouldn’t have been able to stop in time. This is the 3rd time it has happened in a week and a half.
The contact owns a 2023 Hyundai Sonata. The contact stated that on two separate occasions while driving at various speeds, the vehicle started to shake, and the vehicle lost motive power. The vehicle was pulled over to the side of the roadway and turned off. The vehicle failed to restart on both occasions. The vehicle was towed to a dealer where it was diagnosed that the fuel injector needed to be…
The fuel injectors failed on my Hyundai Sonata in two instances. Once on 5/23/24 and once on 9/7/25. During the first instance, I was driving on a local road when the accelerator stopped working and the engine started sputtering. We were fortunately able to stop at a nearby parking lot before the engine completely stopped working. During the second instance, I was also driving through a local road…
Common questions
How serious is the engine problem on the 2023 hyundai Sonata?
It's a documented issue but not catastrophic. 12 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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