luckily for prius owners(prius II), the car stores warm car liquid and then realease them during cold starts to worm up the engine faster. Improving cold starts is one of the prius II advantage over the first one.




here are some stats to back it up. http://www.hybridexperience.ca/Toyot...erformance.htm

i got around 20 km a liter when i drove a civic 5 spd using advanced hypermiler techniques
and now I drive a salvage nwh20 prius that gets almost to 25 km/l with 195,000 km to date.