The newly aquired 2004 Crossfire is now my commuter car. I drive 15 miles on a 55 limit 2-lane road, (with down to 35 "advised' curves, the whole thing at 60 on cruise control early in the morning, LOVE the down-shifting on cruise control downhill as needed so you don't speed up too much!) plus 25 miles of interstate freeway each way = 80 mile commute each day. this includes a 3000 foot down to sea level down elevation change & vice versa on the return.

My first full tank through the Crossfire was 26 mpg., and the 1994 Corvette LT-1 automatic it replaced got 22 in the same commute.

I will say, the Corvette got fantastic mileage for as fast as it was. I ran 13.4 @ 104.5 pretty consistantly with it on the occasional Wednesday night at the local track, and it was bone stock down to the michelin tires and factory mufflers. A retarded chimp on a crappy track would still be in the 13's with the shifter in drive and without drama. As an example, last month I got 29.1 mpg on a 300 mile trip on level freeeway travel at a constant 73 mph (1800 RPM) on cruise control and the A/C was blasting. I saw north of 30 mpg once running 60 mph though most of a tank of gas in Oregon. It weighed 3150 with a 1/3 tank of gas on the scale at the dragstrip.

The Crossfire is a HUGE leap forward in handling, (if not steering) from driving mellow all the way to the limit compared to the C4 Corvette. The Corvette handled "well" because it was very low and had huge tires, not because it had a stiff chassis. The twisty section of my commute really makes for a good comparason between vehicles, I have the road memorized. I must say, I like the Crossfire much better.

From my admittedly limited experience, and what I am reading here, it seems Crossfire will do better in my commute, better in town and hopefully tie on the freeway. The freeway cruise RPM matters.

Interestingly, my sister's 2005 M-B C320 4-matic sedan gets about the same as people report here, not any worse.