Smart Fortwo owners have reported 3 problems related to other fuel system tank mounting (under the other fuel system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Smart Fortwo based on all problems reported for the Fortwo.
During routine driving, gradually smelled stronger gasoline odors. Odor remained with car while parked & unused for several days. Smelled strong gasoline odor when engine running while parked in driveway. Observed gasoline is slowly dripping under car, forward of the rear-mounted engine compartment, from hole located in plastic undercar shield. Have read this is a common problem likely with fuel tanks that Smartusa or mercedes required to be modified by g&k for an emissions system update prior to retail sale, many owners report gas tank cracks where modification hose fitting added, or leaks at the modified fitting due to adhesive or sealant failure. Worst-case, raw gasoline or gasoline vapors drifting rearward onto hot engine components like exhaust manifold represent a serious fire hazard. I don't yet know the exact source of gasoline leak. There are many reports of the Smart Fortwo catching fire during operation. Pray this defect will receive attention prior to fatality.
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The fuel gauge and mpg indicators are both faulty. The fuel gauge does not show the correct amount of fuel in the tank, and the mpg digital indicator is hardly ever true. Especially that the car's actual city mpg is way off from the what is shown on the sticker.
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I noticed that my gas gauge was giving me incorrect readings. The gas tank according to the owners manual holds 8+ gallons of gas. When I get a low fuel warning if I "fill up" the tank it only takes between 5 and 6 gallons. The gas gauge shows full and then within hours all of a sudden it reads there is only a half tank of gas. I visited my dealer mercedes-benz manhattan if February of 2016 after waiting for 3 hours I was told that the issue was being worked on but at that time there is no fix. Prior to going to the dealer I receive no notification of this problem. As the consumer I should have been make aware of this defect. When I took my car to the dealer on July 29, 2016 because of an issue with my air conditioner the service writer told me that there was no fix of the gas gauge problem and that because it was not considered a, "safety" issue no noticed were sent and no recall would be issued. How is not knowing how much gas you have in your tank not a safety issue. Luckily for me I was not driving on a highway when my car ran out of gas recently, had I been on the highway I guess my having to risk my life to get to the side of the highway in oncoming traffic has been determined by Smart USA not to be a safety issue, I vehemently disagree. The attached images will show the gas gauge indicating low fuel level, receipt for amount of gas added and gas gauge showing full with only in this case a little over 5 gallons of gas being added.
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System problems | |
| Other Fuel System Pump problems | |
| Other Fuel System Tank Assembly problems | |
| Other Fuel System Tank Mounting problems | |
| Other Fuel System Tank Filling/charging problems |