Air con / MPG test

[Kinky]

Prompted by a posting on the BMW forum, where someone said they always drove their car with the A/C permanently on, I thought I'd give that a go, just to see what impact it would have on fuel consumption.

So I filled her up, and left the A/C permaanently on, until I filled up again this morning.

And here's the numbers .....

Before this, I was averaging 29.64MPG.

With the A/C permanently on, I got 29.03MPG. Which I have to confess I'm astonished with. That said - I've also been driving the car on this test with a heavier right foot than I normally do, so that could in itself account for the 0.61MPG decrease.

I guess I'll be using the A/C more frequently that I have done up to now.

K

[mx-5 lazza]

Interesting stuff but I'll wait until you have figures for 4-5 tank-fulls or more before I start driving around with the air-con on all the time.