My 2015 4/4 with cold air induction K@N filter Lybrands Manifold and Williams remap is on around 35 mpg . I'm very happy as with the remap the car now performs so much better even in 5th gear .
If you want high mpg get a turbo diesel my Volvo C30 does 53mpg .
that is a pretty good value of consumption as your car even produces significant more power than a regular one. My motivation for searching faults is not to check for the consumption as an end benefit. But if the consumption is "right" the engine runs normally much better.
