Warming up the car before driving is definitely easier on wear for the car. The trade off is time and fuel economy. The best thing for a car would be to let it warm up completely before you start driving. Racers warm up their cars completely before they load them. But who's going to waste 20+ minutes doing that?
The arguments about gas dilution and water don't wash. Madern fuel injected engines manage air /fuel mixtures so well that dilution is not a concern like it was in the days of cars with heavily choked carbs, and as far as condensation goes, a hot engine burns off water.
If you look at the results of any engine test for wear, wear is inversely proportional to engine temp.
Don't buy into the car manufacturers line that "idling an engine is bad for your car". Remember what their motivations are, they have to meet EPA mileage standards and obviously a car standing still makes no MPG.
The arguments about gas dilution and water don't wash. Madern fuel injected engines manage air /fuel mixtures so well that dilution is not a concern like it was in the days of cars with heavily choked carbs, and as far as condensation goes, a hot engine burns off water.
If you look at the results of any engine test for wear, wear is inversely proportional to engine temp.
Don't buy into the car manufacturers line that "idling an engine is bad for your car". Remember what their motivations are, they have to meet EPA mileage standards and obviously a car standing still makes no MPG.