I have $30,000 spend on a car. I'm thinking a sedan or coupe since I heard MB SUVs are not as nice as sedans. Which Mercedes-Benz cars would you suggest? Diesel engine would be nice, I read that those get 30 mpg on the highway easily. E320 CDI BlueTEC maybe? If you can suggest a good MB that is $30,000, it will be highly appreciated. It has to be in good condition too of course. If you can provide the year and model, I would appreciate it so much. Thank you.