I have changed my driving style now after seeing this post. Thank you for the info.

 

Get in, push the button once, turn off the ac, press on brake, start the engine... drive off, not above 60km/h for about 2 minutes till the engine is warm, then take off doing 100 - 140km/h to school... get there... park, sit for about 20 seconds and stretch from the long drive and turn off the car... 520d.

Btw, you guys mention start and drive at low speed, what is low speed?