Can someone interpret these scans for me? I have a 2014 Audi Q7 AWD 3.0T quattro S line Prestige 4dr SUV. I need help interpreting this scan done using "Top Don." I'm not sure if its my ignition coils, spark plugs, or fuel pump (sometimes I smell faint gas fumes with the a/c on...rarely though), but my MPG is horrible, check engine light is on, and the only codes Auto Zone shows me are the O2 sensors. Is this something I can repair myself, based on the attached reports? Do I need to get the fuel pressure checked? If you point me in the right direction, I can probably do it, as I've installed a starter, alternator, and belt in Toyotas and Hondas before, but this is a foreign car and I'm not sure if it's something I can do, or should seek a professional. Easy DIY, and what are the costs?