Are Diesels slower in Winter?

[Bobby Dazzler]

I think you're confusing this with water which is at its most dense at 4 deg C

Air gets denser as the temperature drops.

 

[poisas]

hm mine, when its cold, its also more responsive, and ir more animalish makes some Rrrrrrr at higher rmps but when its cold, it dont like to go over 2k rpm so much so then i take it easy with her

 

[pint6x]

My Volvo V70 diesel takes longer for the glow plugs to warm up when the ignition is switched on, on a cold morning, but once it's running it seems to go just as well as it does in warmer times.

 

[ukcodger]

I think I'm right in saying that the management system on a Merc holds the permissible acceleration back when the car is cold to let the engine/turbo/oil/transmission/exhaust all warm up gently, then it lets you go. Consequently there's less power with a cold car in colder weather.

 

[st4]

I certainly think the fuel consumption is higher when its colder. On a run today thru to Edinburgh I did see a dip in MPG than when I normally go driving in the same manner.