GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

attention GL CDI people... what's MPG and is the SUV underpowered???

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Old Jan 6, 2008 | 01:50 AM
  #26  
tm4exc's Avatar
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E320 & GL450
Originally Posted by scottybdiving
Hey Houston. You are comparing diesel with regular unleaded. Around here, diesel is within .05 to .10 of Premium unleaded, which you must use in 450 / 550's.

We haven't hit the magical 25 mpg yet but have not had it out on flat highway, only hill country. She is getting 22+ in combined City/Hwy. Every time I drive it, I am amazed at it's power and accelleration. It pulls the hills and curves on the way home on cruise control and never has to gear down. It's all about the torque.
My lifetime (2978 miles )combined is 14.5 with the 450. Go CDI whenever you compare it to the 450. The cdi has more torque (nearly 60 foot ibs.) and will climb like a goat. You only lose about a second off the line against a 450. My first choice but could not finagle one in CA.

Last edited by tm4exc; Jan 6, 2008 at 01:53 AM.
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Old Jan 6, 2008 | 10:28 PM
  #27  
StevethePilot's Avatar
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From: Scottsdale, AZ
2004 RX330, 2008 Scion xB, 2001 Honda Insight Hybrid, 2010 Toyot Prius v ATP
Originally Posted by scottybdiving
To clarify more, "Pinks" on Speed Channel is a televised program where, in theory, the participants are racing for each other's Pink Slips.
Ahh, good fill in to the thin details, thank you!
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Old Jan 6, 2008 | 10:28 PM
  #28  
StevethePilot's Avatar
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From: Scottsdale, AZ
2004 RX330, 2008 Scion xB, 2001 Honda Insight Hybrid, 2010 Toyot Prius v ATP
Originally Posted by patsy1099
STP for ambassador. Well said.
I'd do it, but I don't speak the lingo!
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Old Jan 6, 2008 | 11:24 PM
  #29  
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From: Spicewood, TX
2008 GL 320, 2007 Silverado LTZ C3500 Duramax Turbo Diesel
Originally Posted by harkgar
Talking about torque 659 pound foot from a mighty 6.6 liter V-8 is better than a measly 400 pound foot from the MB V-6.

There is no replacement for displacement, particularly when the displacement is turbocharged.
I agree, but I have to admit, at 45% of the displacement and 147% beter mileage, that 3.0 L is bad azz. One of these days we're going to drag race. I think the Duramax will take her, but I'm not sure. Getting her to run it that hard is the real challenge. If I really want to see, we should swap rides.
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Old Jan 24, 2008 | 03:14 PM
  #30  
idiesel's Avatar
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2008 GL 320CDI and 2008 ML320CDI
I average 22-23miles/gallon, mostly highway, but I drive fast. The rpm is usually around 2500 while highway driving. I did get 25miles/gallon, once. For a car that big with decent pickup, the gas mileage is incredible. A long time ago, I remember my 1988 landcruiser getting 10miles/gallon, so anything above 10 makes me happy.
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Old Jan 26, 2008 | 03:34 PM
  #31  
oinick's Avatar
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From: South of the Mason Dixon, North of the Gulf
2007 GL 320 CDI, 2008 M5
Originally Posted by G55K
I have a black GL450 (mine) and a white GL320 (wife). I actually prefer driving the GL320! Power is excellent and the fuel mileage is much better.
Now here's a man whose opinion I can respect since he drives both the gasoline V8 and diesel V6. He has no middle ground opinion, just black and white (sorry...)

I agree with most of the others that the 320 certainly is not underpowered. I chose it over the 450 mostly for its economy and because I think the diesel engine is kind of cool. Diesels (I mean for private use) are pretty rare here in America.

Last edited by oinick; Jan 26, 2008 at 03:36 PM.
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Old Jan 29, 2008 | 04:34 AM
  #32  
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From: Scottsdale, AZ
2007 GL320 CDI, 2001 TJ Rockcrawler, 2005 Scoobie STI
On a recent trip up to the mountains I averaged 26 MPG for the round trip and 28 MPG for the trip home!
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