Skyactiv Technology Tips
Have you noticed that your engine sounds different on some cold mornings? If so, you're hearing a unique piece of SKYACTIV combustion technology at work. The Accelerated Warm up System (AWS) uses higher engine RPM (about 1500 rpm) and a different combustion process to quickly warm up the catalyst for cleaner exhaust emissions. Listen closely and you can hear the engine sound get quieter and the RPM drop when the catalyst is up to temperature (this takes less than 30 seconds after a cold start).
NOTE: You don't need to wait for this warm up process before driving.