We purchased our smart car in Feb and after repeated tests we can only get 22mpg. We installed the optional exaust system but no change. Service says there is nothing they can do. We are currently writing SmartUSA. Has ony one had this problem? Please let us know.

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Comment by Rob on October 14, 2009 at 3:24pm
I agree with the low gas mileage, this is a true disappointment for me also, I am trying to sell my car, I am listing it for 10.995 only for 2009 and no one is interested , very uncomfortable, no special financing, looks not great, " Golf cart on the Highway" except, Golf cart is better since many of them have Back Seat !!! my worst purchase I ever made, will get rid of it under any cost!!!
Comment by Lee (Anabell) Whittaker on September 28, 2009 at 12:53pm
I have about 1500 on my Cabriolet and I am averaging around 36/37 to the gallon. I am heavy on the pedal sometimes. I can't believe that the dealer ship is saying the car is fine and you are still getting 22 to the gallon!
Comment by Tommy Wong on September 27, 2009 at 9:45pm
Sorry to hear that, but no, my worst tankful gave me 30 mpg and my best gave me 40 mpg, with only 5194 total miles on the vehicle. I have learned to shift around 2700 rpm and keep my speed to 65 or less for good milage. When I can maintain that driving style, I average 34-35 mpg.
Did you change your tires out to larger size tires?
Are you running with the A/C on constantly?
Are you driving with the windows down? top down?
Is there a load on the car such as extra items in the trunk?
Is the parking brake fully released? Even if the handle is down the calicpers may still be clamping on the disc.
Are you driving in automatic mode?
Are you shifting around 2700-3000 rpm's?
Have you checked for a leak in the fuel line? or any of the connections?
Is the car running rich on the fuel air mixture?
I know some of these the dealer should be answering but these are some of the things I can think of that might be a parasitic load on your mpg. Even so, I drive sometimes with the windows down and here in Texas, we have the A/C on constantly and I am getting better mileage that 22 mpg. It's all I can think of, hope it helps you towards a solution.
Comment by Seumas on September 27, 2009 at 3:19pm
WOW 22mpg, that definitely warrants a return to the dealer. I got my Passion for two on May 1st this year, the worst mileage I have ever gotten was 34 mpg. I have observed the exact same results as Tom l , best mileage between 45-50 mpg. At those speeds I regularly get 45 mpg and have once gotten close to 50mpg. But since I do not drive 55 or even 60 on the highway I tend to get highway mileage around 35-37 as I normally drive around 70-75 :). My smart now has 11,500 miles on it and I did notice that my mileage started to get better around 5,000 miles but never did I get less then the low 30's. I'd definitely take my smart back and have it serviced asap.
Comment by Tom I on September 26, 2009 at 11:52am
I have a scangauge 2 as well as the optional tachometer. It sounds like you have a problem that needs to be checked. I know that numerous short trips can drop mileage into that range. By short, I mean 1/4 mile. Try taking a 100 or 200 mile trip on a highway at around a steady 50 to 65 mph. My Passion seems to get the best mileage at around that speed around 45 to 50 mpg. Aound 70 to 80, it drops off to around 35 mpg.

If your state has nag radar speed signs (eg those signs that read back your speed as you approach usually in a speed control area), you can check the accuracy of your speedometer. Mine is about 2 to 3% high as a possible.

Your gas station may also be a source of error. Once according to the pump I put in 8.3 gallons while my reserve was still untouched. Go figure.

Have you been siphoning gas for your lawn mower?
Comment by Zippin Pippin on September 26, 2009 at 1:16am
How many miles do you have on your car? I have heard that one doesn't really start getting really great mileage until the engine has loosened up around 10,000. miles. I've just gotten 30.1 mpg at about 1200 miles on the odometer. Part of that is me. It is just too much fun putting my foot on the gas pedal! If you can fill the tank at the same pump, parked the same way, you might get more consistancy in repeatability. Last fill up I had about 7 10th's of a gallon left in the tank. This time 3 /10th's. I actually put more in this time than last.
The first 2 tanks left a fair amount of carbon on the tail pipe showing a rich mixture. that has cleared up by tself. maybe it just needs time. You may want to take it to a more experienced service dept.
Comment by Romeo on September 25, 2009 at 11:01pm
Have you monitor your RPM? try not to go over 3000 RPM and see what is your gas mileage.you my have a bad module.or your transmission is not shifting to the 5 gear. My brabus get 36 to 40 mpg and that;s city driving. I never use it yet to a long trip I don't know the highway mpg.
Comment by Brabus007 on September 25, 2009 at 10:40pm
You need to go to the Dealer, and get it Checked...<:-((
Comment by Wally Gullang on September 25, 2009 at 9:28pm
I received mine in May and have just over 11,000 miles on it. My last tank was just under 47 mpg.. It does vary with each take full and right now I have a high of just under 47 mpg and a low of about 36 mpg.. I do a lot of highway and back country road driving. But 22 mpg ? I get better with my Toyota Highlander. I usually get 26 & 27 mpg with it. But with the smart, I will sooner or later get up to 50 mpg.

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