I believe Mercedes run off regular gas, it could possibly be the name of the car but not the type of gas it runs off of. To find out if it does or not visit the nearest car dealership that sells a Mercedes Diesel and ask about it.
the 2012 mustang will run on regular gas
Gasoline engines cannot run on diesel. Only a diesel engine can run diesel. And a diesel engine cannot run on gasoline.
It depends on the model and the specification of what you have. A car filled with diesel that is supposed to have regular unleaded is not going to run at all.
These cars are absolutely designed and require Premium. They may run on regular, but not happily. (But, they do get great gas mileage!).
Hopefully you haven't run it yet, so drain the tank and flush the fuel lines to keep the diesel out of the engine. If you have run it, consult a mechanic. You may have to break down the engine.
YES
Yes. You may not get the same performance (horsepower) as you would with premium gas, but modern cars can run fine on any grade of unleaded gas.
Assuming that the remainder of the gas tank was filled with regular gas it should not harm the engine. It may run rough for a while but as long as the diesel is mixed with a good amount of regular gas it will be fine.
Mazda cars require gas for their engines, not diesel. They also have hybrid vehicles, which run on both electricity and gas, but not diesel.
It is highly recommended that you DO NOT use regular gas in ANY Mercedes. They were all built to run on premium and you can cause serious damage to your engine if you don't. In fact, I've been told that the "premium" fuel in the US is garbage compared the the premium fuel in Germany. So, don't use regular if you like your car.
No one does. Diesel fuel is not gas. It would almost be similar to putting oil in your gas tank....except worse. Your car will belch out black smoke if it does run. Also a diesel engine does not run on gasoline. Keep them separate.
No - they are not designed to run on gasoline. You need diesel fuel or some can be run on vegetable oil or cooking oil but not gas it will wreck your engine. It detinates too hot.