I find diesels attractive in concept, but there aren't a lot of diesel cars that are available in the US that I would be interested in. I've been scared away from VW by
reliability statistics, and there aren't many other small diesel cars.
It used to be that diesel engines held a huge efficiency advantage over gasoline engines, but Honda and Toyota had gasoline ICEs in the 90's (and possibly a little earlier, I dunno how efficient the D15B6 from the CRX HF was) that nearly matched the thermal efficiency of diesels.
Diesel fuel has something like
14% more energy per gallon than gasoline, and in the past as been priced similarly or even lower. However, more recently we've seen diesel pricing spike significantly higher.