I've had my Smart Car for a year and a half and have never gotten 40 miles to the gallon. Is this typical? I do average about 36 with street and highway traffic. Also, does anyone use a lower fuel type? I'm still using the premium blend. Thanks

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2008 Passion. 50,175 miles. Premium gas. Average mpg since May 29, 2008: 44.82. Last four fill-ups: 49.2 mpg; 48.93 mpg; 50.1 mpg; and, 49.89 mpg.

How? Do you use the paddles? I've noticed a big decline when I use the AC.

Forrest E. Diehl said:

2008 Passion. 50,175 miles. Premium gas. Average mpg since May 29, 2008: 44.82. Last four fill-ups: 49.2 mpg; 48.93 mpg; 50.1 mpg; and, 49.89 mpg.

So many variables can affect mpg: temperature, gas blend, driving style, terrain, traffic, etc.  Very hard to do real comparison but you can see what some other smart owners are getting at http://www.fuelly.com/car/smart/fortwo  The smart is EPA rated at 36 mpg combined so it sounds like your car and driving conditions are right where they should be.  Mostly highway driving at moderate speeds seems to give the best mpg, while heavy stop and go driving gives the worst - just like other cars.  
Hey, brother Diehl, you're doing awesome with that mileage.  You must be driving between 50 and 65 mph on country roads or something similar.  Best I've gotten was about 55mpg, at around 50 mph with a tail wind.  I've also gotten in the high 40s drafting trucks.  Usually I get about 38.   Always premium fuel.   

Forrest E. Diehl said:

2008 Passion. 50,175 miles. Premium gas. Average mpg since May 29, 2008: 44.82. Last four fill-ups: 49.2 mpg; 48.93 mpg; 50.1 mpg; and, 49.89 mpg.

We're getting 49 MPG on 91 octane gas. I've seen 93 and 95 octane gas mentioned here somewhere on these forums, but where in the world carries this type fuel? Have never seen over 91 octane.....Btw, 49 mpg is strictly highway, average of 43 in town.
It's going to vary by station and brand.  The only way I know is to check out your local stations and see.  BTW, using anything over 91 octane won't do anything for the car but will lighten your wallet.


steve campbell said:
We're getting 49 MPG on 91 octane gas. I've seen 93 and 95 octane gas mentioned here somewhere on these forums, but where in the world carries this type fuel? Have never seen over 91 octane.....Btw, 49 mpg is strictly highway, average of 43 in town.

Becky -

Overall, I am averaging 42 - 44 mpg in my '09 Cabriolet.   Highest was 45.2 mpg.  Mostly suburban and a little freeway driving.  When my car was first delivered (pre-owned) it had regular gas in the tank and mileage was terrible.  First tank of premium made a believer of me and though a $.22/gal upcharge over regular, I am sticking with premium fuel no matter what the cost.  Thanks!

- Joe Dumm

 


As the price of gas has increased, I have dramatically changed my driving habits. I keep the car in the automatic drive mode. From a stop, I accelerate slowly. In the city, I drive slowly. I am usually well under the speed limit, except in a 25 mph zone or less where I will be at or just under the speed limit. When approaching a stop light or a stop sign, I coast to a stop. When traveling on the interstate, I keep the speed between 47 and 50 mph. BTW, I have been using the AC. Needless to say, I am not in a hurry. I will keep everyone apprised of my mpg’s.

Thanks for all the responses. Also, is there a "best" way to measure the mph?
Fill up the tank.  Set your trip odometer to zero.  At the next fill up, note the miles driven and divide by the number of gallons needed to refill the tank.  Pretty basic...

Manual mode 99% of the time, 93 octane fuel, sedate driving on two lane roads for most of my driving (at the speed limit or a little under), barely any city driving...

 

 

Fuelly is a great tool for tracking your mileage over time. You can do as jwight suggested and set the tripmeter or just key in your odometer reading (that's what I do). I always pay at the pump, so I take the receipt and write my odometer reading on it. It now has all the information you need for Fuelly and I enter it when I get home. Fuelly also has a mobile version if you're so inclined.

 

As others have mentioned, there are so many variables that affect MPG: ambient temperature, A/C use, driving environment, driving style, vehicle maintenance, tire pressures, ethanol percentage in fuel, etc. It's hard to compare mileage directly, but looking at other Fuelly users and the average for the type of vehicle tells you if you're close. The overall average for the fortwo on Fuelly is around 37-38 MPG across all owners reporting, so you're not too far off the Fuelly average and are spot on for the EPA average. It may just be that your conditions are not favorable for optimal mileage. Also, do try different fuel brands for 3-4 tanks to see if you average any better. My car prefers the least amount of ethanol possible and I find that Amoco gas in my area gives me better mileage versus the more generic stations, but Your Mileage May Vary (YMMV).

The lates figures on my fill-up today: 55.60 mpg.  And this includes using AC for several days.  Over-all mpg for 50,400 miles is: 44.95 mpg [city/highway].

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