2018 Hyundai Santa Fe Sport Complaints

  • Engine, fuel/propulsion System 03/03/2026

    My 2018 Hyundai Santa Fe Sport equipped with a Theta II GDI engine began exhibiting excessive oil consumption, engine knocking, and cylinder misfires consistent with the known Theta II engine defect covered under the Hyundai class action settlement. Prior to the failure, the check engine light illuminated and I experienced repeated misfires and audible engine knocking. The vehicle required frequent oil additions between oil changes due to excessive consumption. The vehicle was taken to an authorized Hyundai dealership where a diagnosis confirmed a burnt valve inside the cylinder head. The dealership recommends replacement of the cylinder head or complete engine replacement to correct the issue. The dealership performed a bearing failure test and attributed the burnt valve to carbon buildup. However, excessive oil consumption in a GDI engine directly accelerates carbon buildup on intake valves, as burning oil deposits carbon on valve surfaces preventing proper seating and causing overhe...

  • Electrical System, service Brakes, engine 04/01/2026

    I was told by a mechanic that something electrical is wrong with the vehicle it causes the engine to misfire. Different issue than before.

  • Engine 04/01/2026

    The contact owns a 2018 Hyundai Santa Fe Sport. The contact stated that while driving 30 MPH and attempting to accelerate, the vehicle hesitated, with the check engine warning light illuminated. The vehicle was driven back to the residence. The vehicle was not repaired. The dealer was not notified of the failure. The manufacturer was not notified of the failure. The failure mileage was 141,654.

  • Engine 03/30/2026

    I own a 2018 Honda Santa Fe it is using oil so fast. I know that there is other people complaining about the oil consumption so my engine just blew up because I had it changed on March 13 brand new oil change and on Monday night the engine blew up.. The people who changed my oil said that there have been a complaint that they have been using so much oil and I have talked to Hyundai about this and they refuse to do anything Now I have a Hyundai Santa Fe that is no good to me because I personally can’t afford a new engine/motor

  • Engine, fuel/propulsion System 03/29/2026

    I bought a 2018 Hyundai Santa Fe from a dealership in May of 2023. Ever since then I have paid around $8,000 in repairs for this car. These repairs have been so expensive and time consuming that last year I wasn’t able to drive it for 6 months because it was in the shop for most of the year. I had to fix the Fuel pump, the Battery, timing chain valve TWICE, O2 sensor , Catalytic Converter, Engine valve, cylinder 1 & 3 and NOW I have to fix cylinder 2 & 4 & that cost again around $2,000 to fix. I am constantly stressed out, crying and becoming broke because I have to keep on repairing this car. I use up all of my tows every year because my car always shuts off on me while I am driving. I am at the point where I want a refund on the car and I want to get rid of this vehicle. I do not feel safe driving on the highway or driving with my two kids and I am currently pregnant again and this car isn’t safe for a family. I am constantly feeling broken down and worthless because I can’t even ke...

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