Drive all the time with the instant fuel economy being displayed in your DIS. Pay attention to it; try to keep it as high as possible.

Then, if you need it, you'll still have all your horsepower available because you haven't crippled your engine with low octane fuel.

This has been shown to increase fuel economy measurably. If it increases fuel economy by 1 MPG (this is about what I've gotten over the last 4 tanks) over the course of the tank, that buys you the same savings as switching down to the cheap gas.


(I read about this technique in a magazine that had some figures to back up the idea, but I'm now struggling to fine an online citation, though)

I distinctly ordered the antarctic blue super sports wagon with the CB and the optional family fun pack

2002 S6 Avant [Ming/Silver] with:
* RNS-E
* Parrot CK3000 BT HF kit
* V1 with ADR remote display
* Carbon fiber dash trim
* RS6 Silver leather sport seats
* RS6 air-leather paddle shift steering wheel
* 18" RS6 5 spoke reps (summer)

She's got a 2007 A6 Avant [Quartz Gray/Light Gray] totally stock