Scotty Kilmer, mechanic for the last 50 years, explains about diesel versus gasoline cars and shows why it's really not such a hot idea to buy a modern diesel car. Unless you want a truck to tow stuff with, where diesels rule.
DIESELS are Cool though, YEAHHHH!
Yes, they cost more to build and buy too though.
Another fact is that diesels, cars or trucks, hold their value better than their gasoline equivalents.
One weird advantage of a diesel if you buy from a junkyard you can run it right on the ground. No car needed