What's up stew? First off it's Koup lol you absolutely can change the display but by using an aftermarket system. I have a double din navigation in mine which is a 7 inch touchscreen with navigation and any other thing u can think of.
As for the sunroof. I don't believe it's mandatory in the SX's yet I DO have one.
And realistically, definitely depending on how you drive, where u drive (i.e. City/highway), auto or manual, mods, it's gunna probably be around 20-30. I drive mostly city driving and have an exhaust and a bunch of mods and I don't drive normally lol and I get about 16-17 mpg's. There are plenty of threads on here about gas mileage and what people get so check em out!
As for the sunroof. I don't believe it's mandatory in the SX's yet I DO have one.
And realistically, definitely depending on how you drive, where u drive (i.e. City/highway), auto or manual, mods, it's gunna probably be around 20-30. I drive mostly city driving and have an exhaust and a bunch of mods and I don't drive normally lol and I get about 16-17 mpg's. There are plenty of threads on here about gas mileage and what people get so check em out!