Chrysler is updating its 200 sedan with stop-start technology to boost fuel economy and reduce emissions in the redesigned 2015 version, according to an industry source.
The system works by shutting off the engine when it isn't needed; for example, the engine will stop running when the sedan is idling at a traffic light, Edmunds.com reported. When the driver steps off the brake pedal, the car will be automatically restarted.
Working with a battery pack, the stop-start technology uses a modified alternator to generate current and to restart the engine.
"The technology is coming to the Chrysler 200 this September," a Chrysler source, who asked not to be identified, told Edmunds. "This is our second application of stop-start. The Ram was first. The technology increases fuel economy and reduces (greenhouse gas) emissions."
The source declined to specify to Edmunds whether the system will be available on both Chrysler 200 engine options or how much stop-start technology will improve fuel economy. It also isn't clear yet whether the stop-start system will be standard or optional.
For the Ram, fuel economy was boosted about 1 mile per gallon with the stop-start system.
The new technology will primarily affect city driving in the sedan, according to Edmunds.
The Chrysler 200's standard 184-horsepower 2.4-liter four-cylinder engine offers 23 mpg for city driving and 36 mpg for highway driving. In the 295-horsepower 3.6-liter V6 option, the sedan is rated at 19 mpg for city driving and 32 mpg on the highway.
Chrysler, which recently became part of Fiat, is expected to bring stop-start systems to more vehicles in its lineup in the near future. The carmaker has additionally been looking for more engineers to develop green car technology including electric vehicles and hybrids.