I'm only getting about 10l/100k(roughly 25 mpg) on my P5. I know it may be partially due to the fact that I idle the engine to warm it up but even that shouldn't affect it too much. I drive pretty much 50/50 city/hwy, have about 38k k's(23k miles), I've got the "Sport mode AT" (shiftronic / manumatic / tiptronic, whatever the hell Mazda calls their version) - again, I know that doesn't help but shouldn't put it way out of the range of a 5sp, either, right? I've only had the car for just over a month now so I'll see if it improves as the seasons change, but is there any simple mods I can do to help improve this performance? Maybe high flow air filter/ exhaust, spark plugs, synthetic oils, ???
Thanks anyone for your input, signed, newbie.(huh)