[QUOTE="jim beam"] so what are your fears based on exactly?[/QUOTE] Well, when I follow a bus on my bicycle I can smell the exhaust gases and see the soot coming from the exhaust pipe with a naked eye... Smell is worse than from the very old gasoline engine car without the cat. I would need to read how people are managing polution from diesel engines in a modern cars. Catalyser would get clogged with soot on these cars so in most cases diesel cars run without it... [QUOTE] diesels typically last /much/ better than gasoline engines so for your criteria to be true, the engine will have been significantly better than the gasoline engine at the same mileage...[/QUOTE] Engines might last longer, but batteries last much shorter... :-) One of my friends back in Europe owned diesel version of the Opel Kadett. Tons of problems with this diesel... Horrible memories, bad experience imprinted in the minds of people owning such diesel could influence todays diesel selling.