what is the average fuel consumption in miles /gallon for NASCAR cars?

Most sources estimate the fuel consumption of a typical NASCAR car at
approximately 4 to 6 miles per gallon.

"The average NASCAR Winston Cup car goes approximately 4.5 miles per
gallon of gas."

(Cached) Drew Fowler: 'Splain it to me....please!
http://64.233.179.104/search?q=cache:8FNFglEIti4J:fowlerweb.com/drewster/print.php

"The average NASCAR gets 4.5 miles per gallon and each race has about
50 drivers and there are about 40 races in the season. They use over
200,000 gallons of gas in a year."

YouthYack: The Solution to Higher Gas Prices 
http://www.youthyack.com/content/stories/editorial/1049140418.shtml

"Last Sunday, [Ryan] Newman?s No. 12 went the last 79 laps (12 under
caution) on 22 gallons of fuel... a typical engine gets around 4.5
miles per gallon. Sunday Newman got 5 mpg."

Caledonian Record: Get Some Knickers 
http://www.caledonianrecord.com/pages/strap_in/story/ef9bd72ad

"Racecars get very poor fuel mileage, usually in the neighborhood of 5
to 6 miles per gallon."

Suite101: NASCAR Glossary
http://www.suite101.com/lesson.cfm/17337/573/6

"Question: On average, how is the gas mileage on the race cars?
 ANSWER: Depending on the racetrack we get 6.5 miles-per-gallon (mpg)
to 7.4 mpg on restrictor-plate races and 3.5 mpg to 4.6 mpg on open
tracks."

UPS Racing: Question: NASCAR Engines
http://subsite.ups.com/racing/news_results/articles/tech_talk/tech_20030803_20030729.html

"The Army 01 car gets how many miles per gallon?
 ANSWER: 4 mpg"

(Cached) GoArmy: Army Racing
http://72.14.207.104/search?q=cache:8mbPxgwObggJ:www.goarmy.com/racing/nascar_news_article.jsp

My Google search strategy:

Google Web Search: nascar "fuel mileage"
://www.google.com/search?hl=en&q=nascar+%22fuel+mileage%22

Google Web Search: average OR typical nascar "miles * gallon"
://www.google.com/search?hl=en&q=average+OR+typical+nascar+%22miles+*+gallon

I hope this is helpful. If anything is unclear or incomplete, please
request clarification; I'll gladly offer further assistance before you
rate my answer.

Best regards,
pinkfreud

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Clarification of Answer by pinkfreud-ga on 28 Feb 2006 17:58 PST

I ran across an article that might be of interest to you. NASCAR will
be switching to unleaded fuel. It will be interesting to learn how
this will affect the cars' fuel mileage:

NASCAR set to use unleaded fuel in 2008
http://www.nascar.com/2006/news/headlines/cup/01/20/nascar.fuel/index.html

Many thanks for the five stars and the generous tip!

~pinkfreud