- :
- Plano, Texas, USA
SkyActiv-G 2.5L has balance shaft but SA-G 2.0L doesn't.My understanding is the the new 2.5 skyactiv engine's internal parts are essentially that of a larger spec'd 2.0 engine. Wise choice by Mazda imho. No need to waste resources in creating a whole different engine platform. We own both of these new skyactiv engines.