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ChrstphrR · 10-26-2008, 08:30 PM

Being that you have a diesel, more of the modern diesel engines will suspending fueling when in gear and off-throttle, which would be more fuel efficient than coasting in neutral.

Offhand, I don't know if Hyundai's diesels do. VW's TDI engines do, that much I do know.

Without someone authoratatively saying so, or without tools/gauges to check your fuel use, the only way you'd be able to tell is... try and see, and check after the tank needs refilling.

10-26-2008, 08:30 PM	#7 (permalink)
ChrstphrR EcoModding Apprentice Join Date: Jul 2008 Location: Sault Ste Marie, ON, Canada Posts: 128 Schwartzejetta - '00 Volkswagen Jetta TDI GL 90 day: 52.87 mpg (US) Thanks: 19 Thanked 16 Times in 16 Posts	Being that you have a diesel, more of the modern diesel engines will suspending fueling when in gear and off-throttle, which would be more fuel efficient than coasting in neutral. Offhand, I don't know if Hyundai's diesels do. VW's TDI engines do, that much I do know. Without someone authoratatively saying so, or without tools/gauges to check your fuel use, the only way you'd be able to tell is... try and see, and check after the tank needs refilling. __________________ Current mod: Skidplate/Undertray for my MkIV Jetta. Next mod: CAD drawing for skidplate so other Jetta/Golf drivers can make one too!