2018 Hyundai Elantra GTRecalls, problems, MPG & safety

“My 2018 Hyundai Elantra GT (2.0L Nu GDI engine) has completely shut off while driving on three separate occasions: approximately June 2, 2026 (first occurrence), June 23, 2026, and September 14, 2026. The stalls happened on the highway at highway speed, while pulling into a parking spot, and on a public road at a stoplight. Immediately before each stall, all dashboard warning lights illuminated, then the engine died without further warning, causing sudden loss of power steering and power brake assist and making the vehicle extremely difficult to steer and stop. The vehicle also consumes engine oil at an extreme rate: after a full oil fill, the dipstick showed no oil within about two weeks (documented on video, September 30, 2026). An independent repair shop serviced the vehicle four times in 2026 for the same unresolved problem ($1,322.48 total), documenting diagnostic codes P0017, P0341, and P0366 and noting no oil leaks; the June 23 and September 14 shop visits correspond to two of the stall dates. This engine family is covered under Hyundai's Engine II class action settlement (2014-2020 Elantra GT, Nu 2.0L GDI) for connecting rod bearing failures that cause…”

“In mid-2024, the vehicle experienced a flashing check engine light. I brought it to Murfreesboro Hyundai (TN), where they confirmed the oil was low and started an oil consumption test. A bearing clearance test (BCT) was also performed and passed. After back-and-forth over several weeks, I was told the oil consumption was within spec, but the dealership stated Hyundai would cover all necessary repairs, including a combustion chamber cleaning, under warranty. I was told this work was completed and the vehicle was returned to me. In July 2025, the exact same flashing CEL returned. I brought the car back to the same dealership, where they again found the oil was 2.5 quarts low. However, this time they claimed no previous combustion cleaning or repairs had been done, and that I would now need to pay over $1,100 out of pocket for the same cleaning that was supposedly already performed — and which they had told me would be covered under warranty. This indicates that the dealership misrepresented completed service work, failed to address a recurring defect, and is now trying to shift the financial burden to me. Hyundai’s claim that oil consumption is not “high enough”…”

“when moving during heavy traffic the car, when braking, will suddenly stop or stop heavily at slow speeds. this causes passengers to be jolted as well as following cars. possible rear end collision is the effect as well. passenger safety of accident is a concern. no warning or indication has been shown at dash.”