2015 Kia Forte engine problems

157 owner complaints filed with NHTSA name the engine on the 2015 Kia Forte — 61% of all complaints for this model year.

157

Engine complaints

61%

share of all complaints

86,000 mi

median reported incident mileage

2 / 16

crash / fire reports

What owners report

“While driving my 2015 Kia Forte5 at approximately 80 mph on GA-400, I was traveling in the far-left lane when the vehicle suddenly and unexpectedly lost acceleration and engine power. Pressing the accelerator produced little to no response. There was no gradual reduction in speed or sufficient…”
filed Sep 10, 2026
“Recently had oil change . Right after B oil change engine light came on, a solid yellow light car is driving rough it’s a 2015 Kia Forte. Have an appointment Monday 7/13/2026 to have dealer to do a B diagnostic. The same place I had oil change”
filed Jul 12, 2026
“respectfully submit this correspondence to request formal assistance regarding my 2015 Kia Forte EX, a vehicle covered under the class settlement. The vehicle is exhibiting severe symptoms consistent with KSDS‑related engine failure, yet the required diagnostic protocol has not been completed by the servicing…”
filed Jul 6, 2026

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

TECHNICAL SERVICE BULLETIN: EXCESSIVE OIL CONSUMPTION NU/GAMMA/THETA/KAPPA ENGINES - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar…
TSB_ENG222_R8 · Service Bulletin/Repair Instructions · issued Apr 3, 2025