If you go to the sites below using Chrome and right click to "Translate to English", it shows that the Japanese Impreza models do have the advanced engine features proposed with the prototype. Including a few that I haven't heard of before (SI-DRIVE).
http://www.subaru.jp/brand/technology/technology/driving_boxer.html?c3057480
http://www.subaru.jp/impreza/impreza/driving/powerunit.html
http://www.subaru.jp/brand/technology/technology/ecology_highefficiency.html
http://www.subaru.jp/brand/technology/technology/ecology_eco-driving.html
It also shows a MPG rating of 17 KM/H, which is 39 MPG. The pricing press release that came out a few days ago shows 38 MPG for the 2.0i sedan CVT. It is so frustrating to have to do all this digging for information. They should just release the specs and let everyone know.
http://www.subaru.jp/brand/technology/technology/driving_boxer.html?c3057480
http://www.subaru.jp/impreza/impreza/driving/powerunit.html
http://www.subaru.jp/brand/technology/technology/ecology_highefficiency.html
http://www.subaru.jp/brand/technology/technology/ecology_eco-driving.html
It also shows a MPG rating of 17 KM/H, which is 39 MPG. The pricing press release that came out a few days ago shows 38 MPG for the 2.0i sedan CVT. It is so frustrating to have to do all this digging for information. They should just release the specs and let everyone know.