Originally Posted by
prelude
Modern vehicles have start/stop systems and what not so they use AGM batteries which is an advantage in cold climates; they provide more CCA compared to flooded. Although starting and running a modern engine in colder climates is fairly comparable, unless you go REALLY low (say -35 and beyond where petrol will edge out imho) there is also the minor little point of driver comfort. Modern frugal diesel engines simple do not heat up enough to be able to spare enough warmth to warm your interior. A less frugal petrol engine will have the edge here. My dad used to own a volvo V70 petrol and was nice and warm in winter (indeed with a block heater and interior heater so he got into a warm car to start with) but his current KIA eco diesel POS simply can't get the temp up (enough) in mid winter.
Mind you, my P38 with very frugal V8, of course, had no problem whatsoever keeping us nice and warm inside all the way [bigwhistle]
Cheers,
-P