YES I KNOW THIS TOPIC HAS BEEN DONE but there was a variable that was not considered.

How many miles do you get in your 6th gen I4 auto and are you riding on STOCK RIMS becuase if you have aftermarket rims with aftermarket tires it will give you the wrong mileage reading due to the difference in rotation beucase of your different size of tire. I think that explains why in the previous post on this topic some people get 500+miles full tank

 

I am also interested what V6 owners are getting. As for the tire size issue. This link will help you to quickly figure out what percentage your aftermarket rims are off by. Multiply by your MPG and you'll get an accurate number

http://www.miata.net/garage/tirecalc.html

 

I am in canada....so you have to do the conversion. I get around 560-580km/58-60L

later

 

i get about 330 or so city driving with my 17" wheels...and that's about the same as before with my stock rims, and on highway i hit about 450, and that's near what i was getting before too. i got a 6th gen, 4 cyl. auto.

 

I am a V6 owner and get between 375-450 miles between city and highway. it averages out to 25-30mpg. I am a very spirited driver too!

 

i got an 4cy auto and i get about 320-330 avg the most i ever got was 450

 

I get around 300 all city driving, but i drive hard, and i live in vegas, so the air is on 2-3 a lot.

 

220-450 is my range on my i4

on 18"s