Appreciate the help. I found a tune up from 2014. $569.61 I guess they should have found the coil problem then. Because it looks like they did not replace all the coils or the spark plugs. Currently the car is running okay at 93,000 miles.

3 years ago it may not have been a problem. Today, most needed repairs are shown by computer generated codes, as you found with the gas cap.

$569.61 for a tune-up? How does that break down on your receipt? Or is there more to this?