BMW already uses a start-stop engine for their non-hybrid European 1 and 3 Series, but Mazda is in the process of developing a version that is more efficient.  Mazda’s system that has been independently developed is called Smart Idle Stop System.  According to the company, this system will improve fuel-efficiency by around 10%.

The unique thing about Mazda’s system is how it restarts the powertrain.  Engine restart is initiated by employing the direct-injection system to spurt gas and ignite it under the specific conditions needed to make a downward force on the pistons that is perfect, seamlessly restarting the engine.  According to Mazda, drivers won’t feel any delay because it will only take 0.35 seconds to resume driving.

Mazda’s system appears to be a lot simpler than most other start-stop systems, which are commonly attached to hybrid systems.  Also, it will cost and weigh less than GMs mild hybrid system.  If Mazda combines this system with their new turbo, which is fuel-efficient, it could boost fuel-efficiency by about 40% in a few years, without any expensive hybrid technology.

Just remember, with any new car technology you should protect yourself by purchasing an auto warranty.  After all, you want peace of mind that you won’t have to pay unnecessary repair costs.