X5d JB Diesel

azwillnj · 11-22-2010, 04:18 PM

My Dad just got an X5 35d and wanted to know what gas mileage people with the JBD modules were getting. He is trying to get the highest gas mileage possible out of the car and was wondering if adding this module would increase the mileage at all. Please report your city, highway, and average mileage with the JBD.

Thanks,
Alex.

TLDR - Post current gas mileage with JDB.

machine · 11-22-2010, 06:50 PM

That module is more for power then mileage. I would stick with stock ECU setting for best fuel economy. But if you want more power it looks like a good purchase.

If your x5d is new, the fuel economy will be poor during break in. It will get better once you get some miles on the engine.

CarolinaBlue · 11-23-2010, 12:31 PM

I have 18k miles on my 335d, which has the same engine as your dad's X5. My mileage went up significantly over the first 10k miles with no change in driving style.

Tell him the best way to increase his mpg is to enjoy his BMW as often as possible :-)

11-22-2010, 04:18 PM	#1
azwillnj First Lieutenant 318 Rep 387 Posts Drives: 2023 M340i xDrive Join Date: Nov 2007 Location: Northern VA iTrader: (0)	X5d JB Diesel - Gas Mileage My Dad just got an X5 35d and wanted to know what gas mileage people with the JBD modules were getting. He is trying to get the highest gas mileage possible out of the car and was wondering if adding this module would increase the mileage at all. Please report your city, highway, and average mileage with the JBD. Thanks, Alex. TLDR - Post current gas mileage with JDB. __________________ Current: 2023 G20 LCI M340i xDrive History: 2005 E90 325i > 2008 E90 328xi > 2011 E90 LCI 335i xDrive > 2013 F30 328i xDrive > 2016 F30 LCI 340i xDrive > 2020 G20 M340i xDrive WE ARE!
	Appreciate 0 Tweet Quote

11-22-2010, 06:50 PM	#2
machine is also an E46 Fanatic 39 Rep 538 Posts Drives: E70 35D Join Date: Jun 2008 Location: Vancouver, BC iTrader: (0)	That module is more for power then mileage. I would stick with stock ECU setting for best fuel economy. But if you want more power it looks like a good purchase. If your x5d is new, the fuel economy will be poor during break in. It will get better once you get some miles on the engine.
	Appreciate 0 Quote

11-23-2010, 12:31 PM	#3
CarolinaBlue New Member 0 Rep 23 Posts Drives: 335d Join Date: Nov 2010 Location: Greenville, SC iTrader: (0)	I have 18k miles on my 335d, which has the same engine as your dad's X5. My mileage went up significantly over the first 10k miles with no change in driving style. Tell him the best way to increase his mpg is to enjoy his BMW as often as possible :-)
	Appreciate 0 Quote