You are correct, says Mark-the-AAA-Auto-Expert: Cars today do not require a warm-up period. The computerized engine controls monitor the fuel delivery and temperature to maximize engine efficiency and performance. There may be some instances that require extra time to defrost a windshield or de-ice wiper blades but they have nothing to do with vehicle performance. In short: Warming up a car today is not required and actually wastes gas.
Source: http://www.bayarea.com/mld/mercuryne...ow/6875044.htm


I get in my car, start it up, pu my phone, wallet and anything else I have with me away and then start driving easily until the car reaches a normal operating temp. Just the simple act of situating yourself in your car with it running is enough time to get oil to all the vital parts of the engine before you start driving.