2003 Mercedes-Benz SL500 Q&A

2003 Mercedes-Benz SL500 Question: Why would the car put out a smell like eggs ( sulphur) when speeding on a highw

When speeding on highway the car puts out a smell like sulphur. Why would this happen? -
Answer 1
You have a very rich running car, most likely you have a check engine light on too, yes? Have your car inspected by a good German car shop ASAP. -
Comment 1
Thank you for your response to the comment I wrote in Oct. Coincidentally, I put my Mercedes SL500 in a German shop as you suggested because the " check engine light " recently came on . Have spent over 5 grand in less than a year. Love the car but seriously considering whether to buy an ESA or trade it in . -