Hello all,

I’m wondering if there is an easy way to see if my car has a tune on it from the previous owner as I just bought it this last weekend. Main reason I am wondering is because I am getting only about 16-18 mpg in the city, and I read online that it should be closer to 22? If anyone has any input or if these numbers are completely normal please let me know! New to the world of Mercedes so I’m learning as I go.