The noise/rattle is something that is related to the way diesel fuel burns.Is there not ways to dampen the engine noise a bit? Would different exhaust options help it out?
Good point and that's a good example of a situation where diesel noise helps, it helps to further define what the vehicle is.Modern diesels are remarkably quiet. Especially in the luxury marques. Think it was Mercedes that was even talking about their "active" engine mounts that compensated for vibration.
But in the truck market, I suspect a certain amount of diesel clatter/rumble is wanted just to say "This is a diesel". Like some insist on buying a V8 gasser just for the sound.
Pretty sure you can tell there's a diesel under that Titan XD hood. I like the sound myself.
People sometimes complain about the diesel stink. But that also is ancient history with all the EPA emissions controls in place.
These aren't the same diesels as 10 years ago.