Verified answer

I had a 1973 Jeep CJ5. I got 13-17 mpg on it.

This Site Might Help You.

RE:

1973 jeep J4000 4x4 Gas Mileage?

Just wondering what is the average MPG on your/an 1973 jeep J4000 4x4

Should be between 17 and 21 mpg, despite what all the other poor comments. The V6 should not chug and has more power than the old I6. Does the check engine light come on? The transmission control modules are known to fail on the 2006's (ours did). We saw the CEL however, and had bad shifting and some poor response. Other then the usual, clean fuel and air filters etc, you will need a shop to take a look at it and check the computer for codes.

38 year old vehicle and you're concerned with gas mileage. Have ye not better to do?

11-14 mpg.

.