It’s a KIA so anything is possible, cam and crank sensors, wiring, computer even total engine failure.
There are so many problems that can cause this, I cant list them here. But if you have driven this car a lot, it might be a broken ignition switch. The car's only nine years old, but that's about it for any KIA. Next time buy a more reliable car and you shouldn't have so many nitpicky problems.
Car shut off while driving completely, cranks over with a loud noise not a knocking noise, some kind of oil behind the driver tire
2007 Kia Optima LX
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Maintenance & Repair
2015 Kia Optima
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Maintenance & Repair
My car will not shut off. Tried putting the gear in all the gears then back in park. The gear display says it is in park but the HUD said shift to park. Is there a way to turn my car off without u...
2015 Kia Optima EX
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Maintenance & Repair
A few weeks ago, my Optima (77,000 miles, about 35,000 on the replaced engine) started turning off and on while I am driving. It happens intermittently. I can go days and it will not do it and the...
2014 Kia Optima
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Maintenance & Repair
2018 Kia Optima has an 18.5 gallon tank on fill up at 45 miles left it stops at 14.1, 14.2, 14.3. Kia says not to keep filling but then I would not get the right amount of gas mileage in the car ...
2018 Kia Optima LX
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Maintenance & Repair
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2015 Kia Optima
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