ex-quattro PETE

Totally depends on cruising speed.

idale

Well of course. But a TDI going really fast won't be magically getting huge MPG numbers since it's still got to fight the same resistance forces the 3.0T would. And hills, man hills really suck even when "cruising".

siren001

So I started running Fuelly. with 97% highway average is 18mpg, with 273 miles logged. Gonna do a SF to LA trip and see if its any better.

My Q5 (Audi Q5) | Fuelly

ex-quattro PETE

At first glance, 18 mpg seems a bit low with pure hwy driving, but then you're in the bay area... you could be on the hwy but stuck in major bumper-to-bumper traffic.

siren001

the 273 I tracked was going on the 80 towards Sac mid day with no traffic. On the freeway I usually go 70mph

NorthValley

You guys must drive pretty hard. I live in a fairly congested part of town, daily work run of 8 miles each way and I have averaged 23mpg over the last 6 months.

idale

One thing to keep in mind is US vs. Imperial gallons. US gallons are a bit smaller (~82%), so we'd show lower MPG figures when compared to elsewhere. Not sure which gallons you guys use there, but assuming it's Imperial then 23mpg (Imperial) is about 19mpg (US).

There will of course be differences based on area, traffic, elevation, terrain, etc., but "which gallons" makes a pretty big difference.

NorthValley

I did my calculation based on US gallons...or rather 3.8 liters to the gallon...9.7kms per liter!

idale

Well all right then. Just wanted to throw the caution out there just since there'll be a difference especially in regions like the UK where they'll use "miles per gallon" but it's the other gallon so numbers will be bigger (about 25% higher, so a pretty big difference). Would cause confusion comparing the two.

Dalancroft

Wife's commute is 23 miles each way. We're less than a mile from the freeway on our end and her office is less than a mile from the freeway on the San Francisco end. She average 24-25 mpg on I-280 and about 6-7 on that dreaded "last mile" to her job, for an average of 20-22 (depending on winter or summer gas).

This, in a 3.8L Porsche Carrera S with 385 HP.