I just drove my car (69 140 manual) up to the Helen, GA show this past weekend. 509 miles one way. As soon as the needle hit "E" I stopped and got gas. No matter how hard I tried I was unable to get more then 8 gallons in. (Love those GA gas prices. Premium $1.78). So something is a little off. Anyway, I did manage to get 18.5 to 19 miles to the gallon. Sarah