I'm looking at an LT, and plan on running 91 octane. What kind of mileage do you get?Welcome I have a 2016 Limited RS. What type of 2016 Limited are you planning on buying? First thing I did when I got mine, but I had 55K on mine is pull the plugs and clean them(not replace as they ar @$8 ea. ) and the car ran like new. Also make sure you use 89 -93 octane with the turbo. Esp wiht warmer weather. It will make it run much better. 87 is OK but MPG takes a nosedive.