F-Type ( X152 ) 2014 - Onwards
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  #21  
Old 10-02-2018 | 12:21 PM
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You don't get the best MPG trolling around town in the lower gears. (Especially with the 8 speed ZF automatic with its 8 speeds!) Back-roads ARE more fun!


+++++++++++


I never realized that Stonehenge was only a model. 14" tall you say? LOL Next you'll telling us that the Rocky Mountains are just a series of speed humps...
 
  #22  
Old 10-02-2018 | 03:01 PM
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At the end of a tank (in town & freeway), my car never registers better than 18 mpg. I like to keep the throttle range fully exercised.
 
  #23  
Old 10-02-2018 | 03:11 PM
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Originally Posted by Unhingd
At the end of a tank (in town & freeway), my car never registers better than 18 mpg. I like to keep the throttle range fully exercised.
Are you near D.C.?
 
  #24  
Old 10-02-2018 | 03:18 PM
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Originally Posted by fujicoupe
Are you near D.C.?
Yes, Monkey County.
 
  #25  
Old 10-02-2018 | 08:21 PM
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Originally Posted by Carbuff2
You don't get the best MPG trolling around town in the lower gears. (Especially with the 8 speed ZF automatic with its 8 speeds!) Back-roads ARE more fun!


I never realized that Stonehenge was only a model. 14" tall you say? LOL Next you'll telling us that the Rocky Mountains are just a series of speed humps...
I've got the 6MT. I hadn't realized the 8 speed ZF automatic had 8 speeds. Maybe I should have gone that route. If it went to 11, I'd have done it.

The Stonehenge comment was in reference to "This is Spinal Tap" where they sketched a stage set on a cocktail napkin and used " instead of '.

"I think that the problem *may* have been, that there was a Stonehenge monument on the stage that was in danger of being *crushed* by a *dwarf*. Alright? "

Looking it up, I think it was 18", not 14.
 
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  #26  
Old 10-02-2018 | 08:22 PM
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Originally Posted by fujicoupe
I like your math!
Seriously though, I don't rely on the car's ECU for accurate readings but do use it for a rough guess. I've found it to be off by about 1 to 2 MPG under most circumstances.
I do wonder what the discrepancy would be if non-ethanol gas were to be used exclusively for a tank or two. I may give that a go as there is a station about twenty miles from me that sells non-ethanol premium.
In case anyone was wondering, I really don't care what the MPG is, it's just an exercise to occupy my OCD personality. Some would say **** personality, but that's another story.
I don't rely on it at all. The "miles remaining" is useful though. I just track it all on a spreadsheet because I'm a dumbass with nothing better to do. Oh, and the OCD. There's a reason I'm a software engineer.
 
  #27  
Old 10-02-2018 | 09:22 PM
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While I agree that fuel economy is not that important in a car like this, I would like to know how the EPA is getting such great fuel economy from turbo engines, supposedly better than from supercharged engines. Driving conservatively I can get over 30 mpg on the highway with the tune. Recently Car and Driver tested the 4 cylinder F Type and got a whopping 16 mpg and a 0 to 60 in 6.4 seconds. I can get 16 mpg during aggressive backroad driving and on road trips I can easily get over 25 mpg. I hope Jaguar sticks with the superchargers.
 
  #28  
Old 10-02-2018 | 09:48 PM
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Originally Posted by speedski
While I agree that fuel economy is not that important in a car like this, I would like to know how the EPA is getting such great fuel economy from turbo engines, supposedly better than from supercharged engines. Driving conservatively I can get over 30 mpg on the highway with the tune. Recently Car and Driver tested the 4 cylinder F Type and got a whopping 16 mpg and a 0 to 60 in 6.4 seconds. I can get 16 mpg during aggressive backroad driving and on road trips I can easily get over 25 mpg. I hope Jaguar sticks with the superchargers.
Sorry, but the AJ126 and AJ133 SC engines are on their deathbeds, estimated time of death at the moment is December 2020.
It's 99% certain they will not be replaced by other SC engines but by single or twin turbo engines, most likely an Ingenium straight 6.
Just as the V8 is a dying breed so goes the SC.
Of course it is all BS driven by government diktats (read mainly EU and CA) for ever lower fuel consumption and ever lower CO2 "emissions", but we are stuck with it unless or until sanity returns.
 
  #29  
Old 10-02-2018 | 10:11 PM
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Just checked and a F-Type 400 AWD weighing over 300 lbs more than the 4 Cylinder got 17 mpg in the hands of Car and Driver. I don’t mind the higher fuel economy standards as long as they get higher fuel economy. In the real world, I think that the supercharger penalty is small, if any. I definitely prefer the supercharger feel and getting a turbo to feel good is difficult. Oh well, I hope Jag can nail their new turbos.
 

Last edited by speedski; 10-03-2018 at 12:16 AM.
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  #30  
Old 10-03-2018 | 09:00 AM
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Well, THIS topic has taken a turn.



I'm too lazy to look (and I don't care THAT MUCH ) but has anyone looked to see if any owners have posted their MPG on Fuelly?

Fuelly - Track and Compare your MPG
 
  #31  
Old 10-03-2018 | 10:05 AM
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Filled up yesterday at 312 miles, 14.297 gallons @ $2.869; computer computation 23.6, actual 21.8, delta 1.8. As expected, but would still like to see numbers with non-ethanol.
 
  #32  
Old 10-03-2018 | 11:16 AM
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In mixed driving with non-ethanol fuel I get 11.5-12.0L per 100 km (about 20MPG); cruise controlling on the highway with top up I have seen 8L per 100 km (about 29MPG). On track, going ***** out, I get about 25L per 100 km (about 9.5 MPG).
 
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  #33  
Old 10-03-2018 | 03:10 PM
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Originally Posted by Unhingd

Yes, Monkey County.
I assume that is Montgomery County. I raced cars many years ago at Dorsey Speedway, an eighth mile dirt track between Washington and Baltimore; I don't think it's open any longer.
I worked in Rockville for a short time and played a little golf at Sligo Park, a fun little executive type course just off the Beltway as I remember.
When I lived near DC was when I owned my XJ6 and was a member of the Nation's Capital Jaguar Owners Club. Rosenthal Jaguar was kind enough back in those days to let the Club use their service department once a month for a tech session. It gave us DIYers a great opportunity to do our own service and minor repairs Quite a few of the members were XKE owners, some of which were show cars. A few other less popular models showed up from time to time, but mostly daily drivers that needed oil changes, lube jobs, front bearings packed, exhaust work, that sort of thing. Rosenthal always had at least one service tech present to lend advice and a hand on some of the simpler tasks; I'll never forget one of the tech's vanity plates was JAGDOC.
Ah, the memories from my many years in that vicinity...mostly bad ones. HaHa
I'll tell you about drag races on the Virginia side of the Circumferential Highway (as it was called in the beginning) before it was completed,
 
  #34  
Old 10-03-2018 | 09:59 PM
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Originally Posted by fujicoupe
I'll tell you about drag races on the Virginia side of the Circumferential Highway (as it was called in the beginning) before it was completed,
I have heard a number of great stories about that circular dragstrip from local natives.


 
  #35  
Old 10-04-2018 | 07:46 AM
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Every locality has areas where enthusiasts 'exercise' their cars.

I have ***heard*** stories of a certain 6 mile stretch of I287 being used for top speed runs before the road was complete. (Rumour...I'm sticking to that story, too)
 
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