Why is ethanol a hydrocarbon if it is miscible with water and why does it not produce soot when burned like gasoline, paraffin, diesel, etc.?

Is it because of the short chain structure of the molecular formula C²H⁶O that ethanol doesn't produce soot? Nevertheless, I have a very small amount of soot in my ethanol tabletop fireplace. Where does it come from? & according to the internet (Chemie.de), hydrocarbons are insoluble in water. Why is this not true for ethanol?

Can I wash my car, which has soot on the outside, in the self-service car wash?

Hello, On New Year's Eve, there was a fire in my basement garage, and my car is now covered in soot, but only on the outside. The windows were closed. Can I now simply rinse the soot off my car at a self-service station? I wonder if this is allowed or if there is anything…

Diesel car despite mileage under 10,000 km per year?

Hello dear car specialists 🙂 Here's the thing: I've found that a turbodiesel engine is significantly more appealing to me in terms of acceleration and driving pleasure than a turbo gasoline engine with the same horsepower. Since I plan to buy a "new" used car in a year, I'm considering buying the aforementioned turbodiesel (Golf…