The best way to warm up your car in cold weather is to drive it gently. This allows the transmission to warm up faster too.
Originally Posted by bzacon
Consider using a block heater, a grill block, and even a warm air intake. Of the three, the block heater costs the most in materials and operation. The last two are virtually free if you find some scrap materials.
View my fuel log 2015 Mirage ES 1.2 manual: 50.1 mpg (US) ... 21.3 km/L ... 4.7 L/100 km ... 60.2 mpg (Imp)