I tried to go throughout the forum but only found old threads. I ask because last night I hit 422 miles which I've been trying to get over 400 since buying it because my dad always brags about his lexus' mpg and I'm curious if others in Q's surpass this much easier than I did.
I’ve had my 2015 q50 for abt 3 months now. Highway trips always sit around 22mpg if I’m driving on a flat road. This is me driving around 80mph. What’s weird is if I drive in a 55 or 60mph zone I get 27 mpg. Why is my highway trips so low in gas mileage… dirty fuel injectors? Dirty air filter?