Europeans already know that shutting off your engine at a stop light can improve fuel economy by as much as 15%. The stop-start technology that automates this process has been available there for a ...

DETROIT -- Johnson Controls Inc. has developed a small lithium ion battery that boosts the efficiency of vehicle stop-start systems. The battery is about the size of a tissue box and weighs around 9 ...

The Vitara mild hybrid has a conventional 12v battery in the engine compartment which starts the car when you first switch it on and a 48v battery under the passenger seat which operates the ...

Stop start systems will typically only operate when the vehicle conditions are correct, which commonly means that the engine is up to temperature, there is not a large electrical load on the vehicle ...