FiestaST(ex 172 Cup)
Why's that?
I leave the M3 running for 5 mins minimum any morning as it runs like a bag of s**t when stone cold. Plus it gives the heated seats time to get toasty in the cold, or the aircon to cool it down in the warm!
It's quicker to warm up the car by driving it, on idle it sits there with cold oil in it for much longer increasing engine wear. With a decent scraper it takes about 2 minutes to clear the ice. It's only a bit of cold, man up!
It actually says in the manual that you should not leave it idling to warm it up.