Cadillac Duramax Diesel CTS?

Edward Niedermeyer
by Edward Niedermeyer
cadillac duramax diesel cts

Motor Trend (MT) has it on the downlow that Cadillac is considering a Duramax diesel-powered version of the CTS. The 4.5-liter, 520 lb-ft turbodiesel fits just fine in the CTS engine bay, say GM sources, as long as the design-ruining raised CTS-V hood is used. The idea behind the oil-burning option: bridge the considerable performance gap between the 3.6-liter V6 base model and the bat-shit insane supercharged CTS-V. Oh yeah, and Cadillac’s Northstar replacement project has been canned, meaning the Duramax is all they have for the job. MT aknowledges that “a diesel CTS for the U.S. would be a risk,” but goes on to argue that there’s little downside to the project since the engine and transmission have already been developed. But as numerous half-baked GM products prove, just because you’re leveraging existing components doesn’t mean anyone will buy them. Especially if they require expensive fuel. In fact…

John McElroy over at WardsAuto makes a compelling case against mass-market diesels, claiming that high diesel prices, engine premiums and emissions regulation ramp-ups render American oil-burners DOA. Of course, a diesel CTS would likely be a pretty niche product. And the biodiesel-brewing types will probably go crazy at the idea of running a CTS on runoff from Chinese leftovers. Still, why the hell isn’t GM considering putting their two-mode hybrid V8 in the CTS if they need another engine so badly? Sure the price premium would make the Duramax look like an Ecotec. But after spending a third of a billion dollars (or thereabouts) developing the thing, they should use it, right? Oh, and diesel Eldorado. There, saved you the trouble.

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  • Ron Ron on Oct 15, 2008

    billc83: How many people remember just about anything built by Cadillac 15+ years ago? I don't think there was one single redeeming product in the lineup, and I'm sure those bring back bad memories don't they? That sure hasn't stopped Caddy from turning themselves around regardless. I can find no legitimate reason to conclude either way that a Cadillac diesel would be DOA. To me, that'd be one of those things that I'd just have to see in the flesh.

  • 10lbsofawesome 10lbsofawesome on Oct 15, 2008

    Hey, I called for this back when GM announced it made a diesel that would fit in the same space as a small block V8. I think that it's a great idea.

  • Bts Bts on Oct 16, 2008

    I really doubt GM would add a V8 diesel option when they have developed a 2.9L V6 specifically for Cadillac in the European market, making 250 hp and 406 lb-ft. As others have mentioned the base Corvette engine would be a better stop gap.

  • CaliCarGuy CaliCarGuy on Oct 16, 2008

    yea i dont think this would work. the iron block of the engine would make it 2 nose heavy. and its diesel. so no one would really buy it. i hear that if this does go through that some r thinking that this should slot above the cts-v because of the torque rating