Because of the way the EPA does the certification of emissions they need the cars to come up to temp really fast as cold start is part of the test. This is also why we cant start in ev when cold. Anytime the manufactures can design a new engine they will design a smaller volume engine cooling system so it will warm up VERY quickly. I have been noticing this since about 98 but rapily starting about 03.

Ducit Amour Hybridae
Mark Smith
Master Certifited Technician
Tempus non reparabilis fugit
"It isn't pollution that's harming the environment. It's the impurities in our air and water that are doing it."

Best Tank 35.0 MPG