Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hello, my name is***** am sorry to hear about your vehicle. To perform the repair that it seems that they did they would need to access the tank through the access panel under the rear seat. If they did not reveal it right or if they spilled fuel then you will get this smell. Most of the time it is just from them opening the system and the smell will leave the vehicle in a day or two. If it persists you need to take it back to check for leaks. Let me know if you need more help.