Hi
I have the impression that on many occasions you can recommend a diesel as being a better option, and I can fully understand why. The problem is, it seems to me, that there is a huge degree of uncertainty over diesels, with widespread negative publicity and many cities proposing to ban them. It doesn't really matter whether this negativity is justified. The "uncertainty" will kill any market. Not only do you have to worry about where you might be allowed to drive, but also whether there will be much demand for diesels in four or five years time, when you go to sell. So economically, diesels might be a better proposition, but it takes a brave person to make that choice.
Philip