NHTSA Complaint #11534201 — 2022 KIA SOUL

1. Car was getting great gas milage 33 in town and 41 on highway. Suddenly, could barely get 28 - 31 regardless of circumstance; then,.... 2, Car kept shutting off automatically when driving, to include when making a left hand turn that nearly got us broadsided when it stalled. Nearby mechanic adjusted fuel mixture and kind enough to test drive. Stated to expect engine light to turn back on, but wouldn't shut down. Able to get to KIA dealership whom looked at, got engine light off but stated that the light would most likely come back on in the morning when started again. It did. Took it back to the dealership again. Note check engine light twice which should have a code. 3. Happened a third time, KIA stated reached out to manufacturer whom had them tear down certain parts and clean. (Associate stated same happened to their KIA and same repair). Working better. Check engine light again. Tried to tell me no code. Not possible with check engine light on. 4. Happened again. Can feel the car start to chug/sputter. Took to shop. Tried something else before I put on the road for about 1,200 miles. Milage improved to about 36/37 on highway 29 in town. However, when I went to return home it shut off as I was fastening seatbelt and placing purse. Mileage immediately stated 9 to 12 to 14. With the chugging detectable. Took an easy 50-100 miles before chugging settled and milage began to climb but not beyond 29-30 mpg. Next tank, rolled 50 feet to edge of gas station and average miles per gallon suddenly stated 50 mpg. Seemed to state averaging 46/47 mpg highway. In town is now dropping. Makes no sense whatsoever as to the variance in gas milage. These people want to keep my car for 5 days leaving me with no car, to pay for the parts they put into the car as they ATTEMPT to figure out the issue. I have heard gas and fuel somehow mixing, had to tear things apart and fix, fuel mixture automatically adjusts, the issue is with the tripometer device..