^^
For me it being underpowered allows me to achieve the MPG it does. If it had my MS3 power, I would get nowhere near the MPG i do on the 5
Good luck
Adding a 6th gear should help on Highway mpg and a small turbo should help with the power when you need it.
Anyway, in my 2013 auto, I got about 25mpg,mostly Highway but a little city and mountain driving. Highway was averaging 80-85 with AC on all the time and the sunroof vent open sometimes, and did quite a bit of speeding up to pass.
Overall I am pleased, and feel that it should get the rated 28 mpg if I were going 65-70 and closing the sunroof. It would be nice to be higher, but I have no complaints, since I am getting what is advertised.
Sent from my Verizon Samsung Galaxy Note 3