Gas Miles per Gallon tracking

[Karl Roth]

Originally Posted by vibrato

Does anyone know if you consistently run 93 octane fuel in a smart will it improve miles/gal?

Is it detrimental to the engine?

Is it beneficial to the engine?

Is it a waste of money?

no

probably not

only you can decide that

If you make changes like bumping the timing or other mods from stock it may give you more. I pass on it and go with 92 maybe I should try a few tankfuls and test it myself. It wont hurt anything but your wallet
karl

[roup1]

4 Fill-ups so far:

4. 186.1 miles, 5.462 gals - 34.07 MPG (includes 60 miles on freeway)
3. 114.5 miles, 2.966 gals - 38.60 MPG (all in town)
2. 258.5 miles, 7.758 gals - 33.32 MPG (includes 120 miles on freeway at avg speed of 80 MPH)
1. 272 miles, 7.71 gals - 35.28 MPG (150 miles on the freeway)
************************-
TOTAL: 831 miles, 23.896 gals - 34.77 MPG

[Gortok]

I'm wondering what kind of mileage would be possible @ a steady 60-65 MPH.

Someone here has already reported 50+ on highway...

[MP3SMART]

First fill 6.69 gallons, 275 miles = 41.10. Mostly highway at 58mph. Will slow down to 55mph for next round. First round also had some local, not much and a few beat downs to see what it could do. Was using 92 octane on flat terrain at sea level.

[Amethyste]

Weeeeeeeeeeeeeeeee!
I went to fill up today and I got 41.8 mpg! I didnt drive like my grandma! Combination of in city and relatively faster roads. I am in love...
So pleased!!!

[Karl Roth]

162 miles 4.09gal 92 octane 39.6 mpg 90% one up mostly chilly was snowing again tonight. Happy as all get out with the milage.
karl

[dancote]

This car is amazing. Best tankful (#5) so far at 43.88 MPG.

Our smart now has 1,200 miles on the clock and mileage has improved steadily since the first fill at 37.9 MPG.

I may have to break down and get a Scanguage if I'm ever going to catch Dave777 though.

[kwagar]

I'm having similar results to post above. Sixth tank was 304 miles and 7.7 gals for 39.5MPG. Total average for 1st 1507 miles is 38.9 MPG. Each tank has resulted in a slight incremental improvement.

Mixed driving rural, city and highway, speeds up to 80 MPH. 50% AC usage and a mix of auto and manual modes.

Am very pleased with my results as I am driving the car not babying it.

[ms bea]

first filll up - 24 mpg....not good,city driving here in San Francisco, lots of stop signs..any suggestions? thanks

[vanslam]

Okay so taking care of my Smart during the 1,000 mile break in period and getting 300 miles to a tank fuel and over 40 miles to a gallon. I decide to see what this baby can do. So I went to manual shifting and extended shift to 3500 to 4500 and man was this car fun. This car has a little pair of balls on it when its pushed. However this resulted in an average mileage rating of 31.35 mpg. Still not too bad but I will go back to getting max mileage with some squirts of fun just to keep it interesting.