I cant believe no one has mention Mercedes-Benz's brilliant Inline-5 diesels yet.. Like the OM617 family.
Volvo makes a nice inline-5 gasser, drive an '02 S60 for a few years. Solid motor for a gasser. I would LOVE to swap a diesel into that car!! Maybe someday.
Volvo also makes all manner of diesel engines for there machines, trucks, and for marine (Volvo Penta) use. Great diesels, well at least the pre-emission engines were. What post-emissions diesel engine doesnt have problems from the factory though
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