The automotive scientists that study engine wear, and what causes it, learned long ago that the cold start/warm-up engine cycle causes the most wear. They also learned that the best way to minimize wear in the cold start/warm-up regime is: 1. Avoid cold starts. Try to consolidate trips so that only 1 cold start is necessary. 2. Get out of the warm-up regime as soon as possible. That is, get moving and put a moderate load on the engine right away. Their research found that idling an engine warm doesn't put enough load on it to get it warmed quickly and contributes to high engine wear by prolonging the warm-up cycle. There are other reasons for getting underway right after starting a cold engine. First, transmissions, cv joints, wheel bearings, etc. also need to warm up and the only practical way to warm them is to get moving. Second, idling an engine warm causes: 1. excessive and unnecessary fuel consumption 2. excessive pollution For these reasons, auto manufacturers don't recommend idling an engine warm Which brings me to my gripe: I notice that many of the newer cars offer remote start either as an option or standard equipment. Not only are auto manufacturers enabling their customers to engage in a bad practice that causes excessive engine wear and excessive pollution while wasting fuel, they are legitimizing the practice too. Is this the triumph of marketing over good sense or what?