where are the spark plugs located on my 2014 buick encore

What is your question?

can feel and hear engine miss firing ,not really bad but noticeable , also gas mileage has dropped, figured it needed a tuneup ,need to find out where spark plugs are located

What makes this problem better or worse?

just has a slight missfire all the time no loss of power or hard start useing a little more gas than before