While not a hybrid technology, it supposedly helps reduce fuel consumption and emissions. If you're not familiar with the technology it's a revolutionary engine design that Mazda developed that uses a type of HCCI (homogenous-charge compression-ignition) cycle. This is considered the holy grail of internal combustion engines because it takes what makes diesels more efficient (high compression and extremely fast burn) and uses a homogenous air-fuel mix, made with gasoline and air, that eliminates the emissions penalties of diesel engines (so no soot or high NOx emissions). The result is a highly efficient engine (even without hybrid technology) with extremely low emissions. I was considering one for my next car. But there's one big problem. I live in the USA where it was never made available. So, forget that one. Next...
