Cold weather = bad gas mileage?

Kevin 1G Drummer · 12-10-2007

Quote:

Originally Posted by JET

Yes, that happens with any car. Usually drops a good 10%.

I'm guessing it's something with the density of the air? I've also noticed that just cruising, I'm at a lower level of vaccuum (closer to 0 on the boost gauge) I suppose that could also have an affect due to the higher fuel pressure?

Matt D. · 12-10-2007

Quote:

Originally Posted by Kevin_1G_Drummer

I'm guessing it's something with the density of the air?

Correct. Cold air is more dense which requires more fuel to see the same air/fuel ratio as when the air is warm. I struggle to get 20mpg in town during the winter with the Evo where as I normally get 22-24.