Poor diesel mpg in winter

[Parrot of Doom]

Why is diesel mpg generally lower, in cold weather like what we're experiencing now?

I usually get about 450-500 miles per tank, for the last month or so I've been getting about 400-450. Driving style is completely unchanged.

[Parrot of Doom]

Dick_Phallus said:

Parrot of Doom said:

Why is diesel mpg generally lower, in cold weather like what we're experiencing now?

I usually get about 450-500 miles per tank, for the last month or so I've been getting about 400-450. Driving style is completely unchanged.

Are you sure about that? I'd have thought your style would have changed when faced with snow and ice, but if you've got the skills to deal with those conditions you adapt instinctively, so are not consciously 'trying' and so don't think you are. If that makes sense...

No, I'm plodding along at the same speeds on the motorway, and driving on A-roads if anything I'm being much more gentle with the accelerator.