2017 Hyundai Elantra GT engine problems

What owners report

• “My vehicle was brought to an authorized Hyundai dealership In November 2025 to complete safety recall campaign KSDS (Campaign 966). Soon after picking up the vehicle after the dealer flashed the ECU, the vehicle went into a permanent, dangerous "limp mode" that severely limits the engine's RPMs…”

  filed Jun 7, 2026

• “I am writing to formally log a critical safety and product reliability complaint regarding my Hyundai Elantra GT. The vehicle has suffered catastrophic engine failure characterized by severe rod knock. This failure occurred without any prior warning from the vehicle’s onboard diagnostic systems…”

  filed May 14, 2026

Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.

Related service bulletins

• This TSB references the Op codes to use for claim submission and the Parts required based on the vehicle’s inspection results from TSB 22-01-023H-2 (DTC P1326 – Engine Bearing Inspection/Engine Replacement) or the…

  26-01-033H TSB · Warranty Program/Extension · issued Mar 26, 2026

• This TSB references the Op codes to use for claim submission and the Parts required based on the vehicle’s inspection results from TSB 22-01-023H (DTC P1326 – Engine Bearing Inspection/Engine Replacement) or the latest…

  26-01-033H DN · Warranty Program/Extension · issued Mar 26, 2026

• Hyundai is conducting a campaign to enhance the knock sensor software to detect abnormal engine bearing noise before potentially severe engine damage occurs. If abnormal engine bearing noise is detected, the Malfunction…

  24-01-068H · Service Campaign · issued Aug 19, 2024

Engine problems in other Elantra GT years

Other reported problem areas on the 2017 Hyundai Elantra GT