XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 2003 - 2009

shocking mileage

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Old Aug 29, 2015 | 06:44 AM
  #21  
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Originally Posted by psales264
All is good till you get just north of Harrisburg. Then it goes to crap LOL
destination = Lancaster Co... so that's not an issue.
 
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Old Aug 29, 2015 | 06:47 AM
  #22  
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Originally Posted by Marque
Trosty, How much gas is normally left when you refill up? Like I say, I'm usually ruining mine down between 0-25 miles to empty...
Doesn't running the tank so low risk damaging the fuel pump. I've been led to believe you shouldn't run the tank much below a quarter to avoid overheating the pump.
 
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Old Aug 29, 2015 | 06:57 AM
  #23  
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Yep, shocking...

 
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Old Aug 29, 2015 | 07:07 AM
  #24  
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Originally Posted by Cambo
Yep, shocking...

Wha??? over how many miles? I could get mine to show 50MPG if I reset while going down hill.. LOL
 
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Old Aug 29, 2015 | 07:09 AM
  #25  
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Photgraphic Evidence
7.7L/100kms, nice. Averaged 90km/h Over 640kms Still more than 1/4 tank left Don't quite believe the range, but still that suggests over 1000kms is possible And here in mpg
 

Last edited by Cambo; Aug 29, 2015 at 07:12 AM.
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Old Aug 29, 2015 | 08:59 AM
  #26  
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amazing Cambo.... any special technique?
 
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Old Aug 29, 2015 | 09:17 AM
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US or Imperial Gallon in OZ?
 
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Old Aug 29, 2015 | 09:17 AM
  #28  
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Cambo, you know that's no fair! We can't have diesel over here!!! Hahaha

That's amazing numbers though!!!

@rsmartin, I call that "myth" (take that with a grain of salt though)
 
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Old Aug 29, 2015 | 06:57 PM
  #29  
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Originally Posted by Marque
Cambo, you know that's no fair! We can't have diesel over here!!! Hahaha
What diesel? That was the XJR...

Originally Posted by trosty
US or Imperial Gallon in OZ?
It's a UK spec car

Originally Posted by rsmartin
amazing Cambo.... any special technique?
Yep...

A/C off, and drive with one eye on the road, one eye on the instant fuel consumption. To be honest it was not a fun trip, but it was an interesting exercise...
 
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Old Aug 29, 2015 | 07:34 PM
  #30  
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Originally Posted by Cambo
What diesel? That was the XJR...
SHISK Cambo!!! I'm gonna try to get 35mpg on my next trip. I usually do the "1 eye exercise" too, but your workout tolerance is better than mine! Hahaha
 
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Old Aug 30, 2015 | 11:25 AM
  #31  
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I just did a 450 mile trip and averaged 28.6 mpg. 120 miles of the tip was on hilly country mountain roads and another part was in bumper to bumper traffic that took 2.5 hours to go 15 miles the rest was freeway doing 75. Considering the 120 miles of very hilly country roads and 2.5 hours of stop and go traffic I thought the 28.6 was pretty damn good for a full size sedan. I figure that on the freeway at 75 mph it had to be getting north of 30 mpg. When I got home the fuel counter said I still had 165 miles left.
 
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Old Aug 31, 2015 | 11:35 PM
  #32  
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Originally Posted by Cambo
Photgraphic Evidence
7.7L/100kms, nice. Averaged 90km/h Over 640kms Still more than 1/4 tank left Don't quite believe the range, but still that suggests over 1000kms is possible And here in mpg
So if in Imperial, that's 30.4 US MPG, correct?

I get 23 in the XJR pretty much all the time in combined driving.

Jeff
 
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Old Sep 3, 2015 | 09:13 AM
  #33  
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I wish I could get better mileage in my XJR, but I can't help drive it like I did my prior two 911s. I usually average 18.x, which is a lot of suburban driving averaging 25-35 mph.
 
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Old Sep 3, 2015 | 09:23 AM
  #34  
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challenge accepted! I will give it a go to see what my cat can do.
 
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Old Sep 3, 2015 | 09:32 AM
  #35  
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Those pics were from a few years back, since I changed the catalysts and had a tune done it's even better on the open road.

Haven't done a long trip in a while but the 20km trip down the motorway at 110kmh to the city I see 6.5l/100km, which is pretty good I think.

What's that? 36mpg US?
 
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Old Sep 6, 2015 | 02:40 PM
  #36  
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Mine gets 30mpg highway and 23 combined. It helps to engage cruise control wherever possible and practice hybrid car techniques such as 'pulse and glide'. Before I got my Prius daily commuter I averaged barely 20mpg combined, could not resist mashing the gas pedal every chance I got, still hard to resist every time i get into the Jag.

Cheers,
Wolfy
 
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Old Sep 7, 2015 | 11:48 PM
  #37  
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I have yet to go on a long distance trip, but I regularly drive from Ft Lauderdale to West Palm and get 33mpg since I drive at 70mph.
 
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Old Nov 11, 2021 | 07:34 AM
  #38  
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Hi there
shocking mpg
I may have to change my fuel filter after all
2003 xj8 4,2l swb 337000km approx 207000miles lights music and climate on sunroof tilted


This happened on a very relaxing trip to Amsterdam ,alone for 500km with constant 100km/h after refill with 98 oct trough the night
 
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Old Nov 11, 2021 | 05:46 PM
  #39  
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"
P.S. BTW nearest Pure fuel gas station to me is 40 miles away. Not one single pure gas place in the whole of the Dallas/Fort Worth metroplex."

No Buck-ee's near you?
 

Last edited by Eric-in-Texas; Nov 12, 2021 at 08:57 AM.
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Old Nov 12, 2021 | 01:09 AM
  #40  
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What does that mean ? Never heard !
tell me . I always like to try what's possible and get my cars used to that way of travelling . It's very revarding , relax driving in my davenport more smies by gallon
 
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