One problem related to check engine light on has been reported for the 2009 Smart Fortwo. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Smart Fortwo based on all problems reported for the 2009 Fortwo.
Was driving on the highway when suddenly over heat and check engine light came on, and about 20 seconds later the car loss all power. I almost got hit my the car behind me, but was able to safely pull over to the side of the highway.