Hello all - thank you all for having me.

I’ve owned a Panamera 4S (2010) for 3 years now. It has ~61K miles.

The consumption / mileage display reads 15.9 MPG. I reset it ~400 miles ago. I drive ~50/50 city / hwy. I recently changed the air filter, the oil + filter, the spark plugs and ignition coil... I ran out of ideas as to what could be the cause for my low mpg.

General question is, what mpg should I expect and what else could I do to potentially improve this? I’m growing poor because of fuel costs.

any help would be great! Thx in advance.

 

Take it out of Sport + mode

does it seem like it's running rich? my 2010 4S ~60k miles is getting 19-20 mixed driving

things that come to mind are the oxygen sensors and vacuum leaks, or even a stuck/bad injector