i dunno about the gas mileage.. i have a modded TL with all sorts of goodies and it sucked a lotttttt of gas.... i thought thats how all luxury cars were since i was so used to it, once i bought my G, i felt like i was driving a civic. I kept driving and gunning the pedal all the time and the gas needle barely moved!!! ...

so from that, I think, coming from a 4cyl to a 6cyl, you will notice a big difference unless you are already used to it.. I think all the mods from my TL was equivalent to a V8.

good news is, when i decide to get an SUV, gas will be a peice of cake..

 

haha sometimes I wanna stab that thing.

 

City= 15~19
Highway=23~27

These are what I get usually