Originally posted by RS-LOVER
I know the question is for WRX's but I'm confused.
First of all, how do the WRX's get better MPG then the RS's?
Your engine has a larger displacement, so it uses more gas most of the time. The WRX sucks more gas down while it's under boost, but that's only a small percentage of the time that the engine is running. The rest of the time it's just a puny 2 liter, 4 cylinder.
That's the beauty of the turbo: two personalities in one engine.