general problems of the 2014 Smart Fortwo

While driving at a steady speed of 40mph, the vehicle suddenly lost power. You could hear that the cylinders and pistons stopped working. The vehicle had 2 gallons of gas. We put in 2 more gallons at the adjacent gas station and limped home at 30mph. The dealership picked up the vehicle at our home and drove it from milwaukee to chicago without incident. The dealership said they replaced the purge valve and all 3 ignition coils;come and pick it up. On our drive home, going a steady uninterrupted 40 mph (no stop signs, or stop lights at all) we drove 28 miles and the same problem happened again. The vehicle was towed to the dealership. The dealership requested assistance from mercedes. Mercedes declined, stating they would accept the problem when the dealership identified the source of the problem. After 10 days the dealership notified us that they could not identify the source of the problem. We waited through the 30 business day lemon law period and filed for relief.