I do not see a brand new OEM coil going bad. Either not a brand new coil or others issues with the car. Hope you get it sorted.More like what did my veloster do to me today. Lately it's runing ok, although I had a "brand new OEM" coil go bad on my way home from work. Running on 3 cylinders, the car managed to get up to 35mpg on a stretch of 30 miles of highway even though I was going 75mph on average. . 😆
I never seen that kind of mpg on this car, the best I ever got was like 31mpg for about 25 minutes driving like a grandmother. I just hit 85k on the odo, the car also acts weird sometimes when going low-speed. It's very jumpy, like the gas pedal is an on/off thing, but not all the time.