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What is HDDT?

by David Zatz on

FCA has trademarked the term “HDDT” for vehicle interiors, exteriors, and nameplates. The purpose of the name is a mystery so far, but we can look at what might be coming up:

  • HDDTDirect injection engines
  • More transmissions, including automated manuals (Heavy Duty Diesel Transmission? Heavy Duty Dual-clutch Transmission?) — considering that the former Chrysler was working on an automated manual transmission for heavy duty trucks when Fiat took over
  • Acronyms for trim levels (e.g., Duty Duallie Truck, Heavy Dang Duty Truck, or Heavy Duty Diesel Truck)
  • Possible new features (High Density Dual Tailgate)

Some companies have been working on extremely high-compression engines that use gasoline with diesel principles, but we can’t make the letters fit.

Do you have any ideas? Let us know.

David Zatz founded Allpar in 1998 (based on a site he had begun in 1993-94), after years of writing reviews for retail trades. He has been quoted by the New York Times, the Daily Telegraph, the Detroit News, and USA Today. Before making Allpar a full-time career, he was a consultant in organizational psychology. You can reach him by using our contact form (much preferred) or by calling (313) 766-2304


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