Hey there, I'm the new kid here. I have a 2017 Lattitude with 47,500ish miles on it. I've had some sputtering going on mainly when in idle, basically misfiring. There has never been a check engine light on. I have heard and read that it might be my spark plugs? It might be the coils? I might need a tune up? I took it to a local shop and they hooked it up to the computer and drove it around and felt the sputtering but nothing showed up. Anyone have any tips or ideas for me? I took it to the dealership and they wanted an arm and a leg just to do a diagnostic!