Hey I am a tree hugger!

 

Milage is the basis for charging yuor property tax. The city sets a rate of so many cents per $1,000 dollar appraised/assessed value.

Now regarding mileage ...
On highway trips at 70 mph running Shell V Power I get between 31.4 and 32.2 mpg

 

in the city i average 14.5 mpg, lots of stop n go average speed is 25 mph... got an `98 stock except corsas and dual cone intake....don`t know why but thats low comparrison with most ppl here

 

First off, the car has a 383 and a fairly mild cam. I bought it in Virginia and drove it back to Idaho. On the way home I kept the A/C on and the cruise control set to 80mph. The DIC said I averaged 34mpg, but I always check when I fill up, and it was actually 31-32. Still not bad considering the mods. I was going over 600 miles per tank!!! Way better than I thought I would get when I bought the car.

Around town I get about 14-15, but that's because I can't keep my foot out of it. Not even for a single tank of gas.

"Yeah, well my honda gets over 30mpg" Really, so does my Corvette!

 

My 04 A4 315 coupe averages 26 hwy. with hard run flats. My original sticker said 25 hwy. I suspect that when I get rid of the R/F it will drop off a little bit.

 

I got that on a trip from SC to NJ. Crusisng at around 75 the whole way. Headers and intake 3.42 gears

 

I check after every tank of gas. I've found that around town the DIC is really accurate. On a road trip or mostly freeway, the DIC is about 10% higher than actual MPG.

 

Last summer, pre tune-up, took my daughter on a 1200 mile road trip. Included three days of driving around LA/Orange County. Average was over 28 MPG. '99 A4, stock, with non runflat tires, 3.15 gears, slightly deformed center air dam.

Mountain trip, twisty roads (Sacramento Valley over State Route 20 to Fort Bragg, SR 1 to US 101, 101 to Eureka, SR 299 to Redding/I-5), averaged about 26. On the loud pedal a bit - twisties aren't fun otherwise).

I'm curious, though; I've noticed that when my headlights pop up, the mileage drops noticeably. Up to 2-3 MPG. I assume it's just the slick design of the car, but wonder if anyone else has seen the same.

Also, after adding the Vararam and Flowmaster exhaust and Predator performance tune at 73k miles, and replacing the wires with MSD and the plugs with AC Iridiums, the mileage came up a good bit. 55-60 cruise now runs 30-33 MPG on the DIC, up from 28-30 before. Original plugs were at .075 gap, so the tune-up probably accounts for some of that, but the mods were surprising.

Usually the eco-mobile drivers can't catch up to give me grief. One did at a party - bragging on their hybrid. I asked what they were going to do with all those hazmat batteries when the thing is a few years old and needs a change... Local landfill, or off to recycling he11 on the Chinese coast? (Look that one up - the computer industry trade publications have talked a bit about it lately - the volume of toxics being hand-recycled on a beach there. )

 

Bow Tie Rocket how true.

My wife has a hybrid Prius and gets 42mpg at the best. I get 28 mph with my 2002, no mods yet, 38,000 miles, auto. I have seen 28.2 mph Ukiah to Sacramento via Hwy 80.

 

Thanks for the confirmation.

I wanted to add that I don't have anything against the Prius crowd - only the sanctimonious ones. They've done pretty well, and I've had one creep past me uphill on the Grapevine coming out of LA while I was driving my company Taurus.

They seem to have pretty good power, but the disposal of the batteries still concerns me. That and the long payback was why my wife got a new Grand Prix rather than the Honda Civic Hybrid.

Payback was about seven years when the battery replacement and other maintenance was considered, and the GP GT2 gets over 30 with my light-footed lady driving it. Didn't seem like a good risk, particularly with a relatively new technology.

Like one of my friends says, there's an a$$ for every saddle - but mine fits the Corvette sport seats best.

 

I averaged 34.6 (actual, DIC read 35.3) driving from San Diego to Tulsa, Ok (With heads, cam, headers avd speed about 83).. Best I've got in city driving is with h/c is 16.8 (actual again) since the h/c/headers. It really is a tale of two cars now between city and highway. To be fair, I don't think I've made it through a tank without getting on it a couple times though...

 

What are your cam specs? Compression?

 

Sure have. Drove to Toledo from Nashville in daylight and averaged 31.8 (including one brief spool up to about a buck forty). Drove back at night, no buck forty, headlights up, average 30.1. So if I sort of add a fudge factor for the one dash, it may come up to the 2-3 mpg you've observed.

Charlie

 

Stock compression... I don't have the lift numbers on me, but it is a Comp Cams XER 228/232 113 lsa cam. It was a custom grind with a little less lift, but can't remember exact numbers.