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Old November 5th, 2018, 14:50   #16
sdean7855
Member
 
Join Date: May 2006
Location: Kingston, NY
TDI(s): 2003 Jetta
Fuel Economy: 65/45
Default EPA emissions report diesel vs gasser

Was cleaning out my desk and came across an answer of sorts to this question I originally answered. At some point, I fought my way into the incredibly involved and arcane database of EPA emissions test results and found the attached data. Although I forget the exact search args I used, what you see is here is, IIRC, applicable to the Mk4 Jetta. I would have been searching for what applied to my 2003 Jetta. Anyway, there are three data sets

  1. Jetta TDI with manual tranny
  2. Jetta TDI with auto tranny
  3. Jetta gasser sister car (dunno whether manual or auto)
As expected, the diesel had better CO2 emissions, but worse NOx
http://sdean.net/cars/'03JettaGasVsD...ssions0001.jpg
__________________
2003 Jetta TDI, 1998 Original Mini
Previous cars:
  • 1998 VW Golf VR6 GTI, Garrett Chip, Shine Suspension, bagged by a deer one rainy midnight, *&%$ insurance people totalled it
  • 1985 VW Golf GTI
  • 1975 (or so) VW Golf Diesel, much grief, finally stuck a Weber carburetted Scirocco engine in, HOT!
Rides of my Youth:
  • 1929 Type 40 Bugatti
  • 1932 Type 49 Bugatti
  • 1960 3.5 Liter Maserati GT (a chipped VR6 mill is a match of the Maserati mill)
  • English Ford Anglia
http://www.sdean.net/bugattis.htm

Last edited by sdean7855; November 5th, 2018 at 15:06. Reason: link didn't work
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