My friend bought a car with a diesel engine and gave him more then a headache.
There's no great performance of speed from them.
Do you KNOW anyone who will sell me a car, for a diesel engine?
It it is more economical than the standard petrol engine. Not always of course.
First, look up the price on line from one of the sources that give you the price, Notice that there are different prices depending on who you buy from. A private sale will cost you less, but it is sold as is. A dealer may charge up to $1000 more but give you some sort of warranty, If you need you can check online car sales here https://imagineautos.com/ with good price. But often there are so many strings attached to the warranty that it is not worth it.