Gas Tank Size and Driving Habits


DUROC

GT Owner
Aug 6, 2006
57
Westchester, NY
I am very happy to be joining this forum as a new owner of a 2005, GT, white, blue stripe. This forum has been very helpful in my search for the right car and very informative and fun about many aspects of the car now that I own it. Many thanks to all for that.

Let me offer a small contribution about a weird little effect of which I may be the only victim to date. I mention it because it might save another new owner a bit of grief in the future.

When I first started driving my car, I was unhappy to watch the gas gauge move as if the car were drinking gas like crazy. I never saw a gas gauge move so fast! It gave me the feeling that I had made a mistake buying the car and, doing what I could reduce the bleeding, I found myself driving in higher gears than I would have if the price of gas were lower or if the car, seemingly, weren’t drinking so fast. Then I started measuring gas consumption and mpg at the pump and was very pleased and relieved to learn that it wasn’t bad at all, something north of 15 mpg, mostly on country roads. And then I figured out what was going on.

We’ve got a gas tank that’s much smaller than others, which is why the needle moves so fast. (All right, you all know this but maybe the next newbie won’t). Using the Ferrari 360 Spyder for comparison, you would need to increase the GT’s 17.5 gallon capacity by 43% to get up to the Ferrari’s 25.1 gallon capacity! The 360’s gas mileage is worse than the GT but gas gauge doesn’t visibly drop every time you look at it because of the greater capacity of its tank.

Compared to some exotics, the GT has a low revving engine but like any car responsive car, it needs to be driven with the revs up somewhat for road adhesion. It depends upon your driving style but now that I’m not so worried about gas mileage I find that for me the car seems happiest at 2500-3500 rpm. – usually second gear on two-lane roads, 3d on parkways and 4th over 75-80mph. I couldn’t be happier with the car now.

Glad to be joining you all.
 

HeritageBruce

GT Owner
Mark II Lifetime
Mar 13, 2006
748
Southern CA
Welcome DUROC,
The GT's tank isn't too small, my Porsche's tank is 16.9 gallons, my Lotus's is less than 10, yes less than 10 gallons. On my way back from Vegas where I purchased the car, I got almost 20 miles per gallon. Not bad at all.
 

B O N Y

MODERATOR & FGT OWNER
Mark IV Lifetime
Sep 5, 2005
12,110
Fresno, Ca.
I am seeing 22mpg at highway cruise and 1 mpg on burnouts... The mileage is reasonable, sometime there is a problem with the nut behlnd the wheel :biggrin

Welcome on the forum by the way.
 

HeritageBruce

GT Owner
Mark II Lifetime
Mar 13, 2006
748
Southern CA
bony said:
I am seeing 22mpg at highway cruise and 1 mpg on burnouts... The mileage is reasonable, sometime there is a problem with the nut behlnd the wheel :biggrin

Wait Bony,
Don't you get 0 MPG on burnouts??? :willy
 

Craig

GT Owner
Mark II Lifetime
Mar 14, 2006
174
San Diego
DUROC said:
Compared to some exotics, the GT has a low revving engine but like any car responsive car, it needs to be driven with the revs up somewhat for road adhesion. It depends upon your driving style but now that I’m not so worried about gas mileage I find that for me the car seems happiest at 2500-3500 rpm. – usually second gear on two-lane roads, 3d on parkways and 4th over 75-80mph. I couldn’t be happier with the car now.

Glad to be joining you all.

Duroc brings up a good point. Most other exotics are high strung engine and like all high strung engines they like to rev. But the GT is fairly lightly tuned, it gets it's torque because it breaths like it is a 10 liter (12 # boost on a 5.4 liter). True... you wouldn't want to punch it at 1500 RPM all the time as that is the most likely scenario for detonation. But I find the car happy to cruise at 2000 RPM with no problem. I'm talking cruising and not spirited drivng. Do the rest of you use 6th on the freeway for normal driving of 80+ :biggrin

Craig
 

nota4re

GT Owner
Mark IV Lifetime
Le Mans 2010 Supporter
Feb 15, 2006
4,291
I agree that the GT has a small gas tank but I must admit that each fill-up is a memorable experience - likely more so for others, but memorable nonetheless.

Speaking of which, a close work friend (our facilities guy) had been asking me for weeks to bring the GT to his small community car gathering. I always had something else going but finally this previous Saturday, I obliged. This is a very modest size community in a neighborhood with not the best reputation.

My wife and I thoroughly enjoyed ourselves for the couple of hours we hung out. The people who stopped by were extremely nice and modest people who just genuinely appreciated the GT. It was a real pleasure to meet them as they looked over the car. I admittedly attended the event as a favor to a friend, but it was a great opportunity to meet people who would otherwise have no opportunity to see a GT close up. I had a blast.

I guess my occasiuonal gas station stops have yielded many of the positive experiences I have had with "strangers". Ironically, I never take the GT when I'm in a hurry.
 

wonkawonka

GT Owner
Sep 12, 2005
203
Lebanon
As you drive the GT more and more, you start to appreciate how much you control you have over mileage. People don't believe me when I tell them in regular driving in LA I get around 16 MPG.
In general around town I go 1st-3rd-4th if there are many lights around. But if I can get the car over 60 MPH, I go straight to 6th and leave it there.

Until I get sick of driving like a 70-year-old 4-foot-tall Asian grandmother.

:biggrin
 

Specracer

GT Owner
Mark IV Lifetime
Nov 28, 2005
7,162
MA
In speaking with the engineers at the rally, during the high speed runs @ Nardo (where 211.79 was done) they could only run 2 laps and have to stop for fuel, as they were running about 2.9 MPG
 

SuperB

Board of Directors/Owner
Mark IV Lifetime
Feb 8, 2006
954
South Florida
It would be nice to hold more fuel, but looking at the belly at the rally, there truly is no room left for a bigger tank.

6th at 80? I keep it in 4th so i can pass the little old ladies and scare the dentures out of them with my Borla. :biggrin (I am in Florida BTW)
 

DUROC

GT Owner
Aug 6, 2006
57
Westchester, NY
I wasn't intending to say that the fuel tank is too small, just that it creates the illusion of bad gas mileage, watching the gauge move. But I do think that at under 2,500 rpm you're rolling, not driving, which is fine on a straight freeway but not when you want any kind of handling.

BTW, I have a couple of other cars for which I paid extra to have extra exhaust music. I'm leaving my GT with the stock exhaust because the relative quiet makes it seem even more powerful, at least to my ears.
 

Specracer

GT Owner
Mark IV Lifetime
Nov 28, 2005
7,162
MA
As superB comments, it is amazing how the tank jams in. It goes from the rear bulkhead, to the front bulkhead. and the coolent lines run there too. pretty amazing how it is all fits, and then even works on top of it all......
 

Silverbullitt

GT Owner
Mar 3, 2006
1,757
Lago Vista, TX
I have completed the run from Detroit to Austin. I measured mpg from just outside Texas on IH30 to Waco, TX. It exceeded 25 mpg while mostly going 80. I wouldn't think of driving back from Detroit in 4th. The motor hummed along between 1700 and 1900 rpm.
 

Specracer

GT Owner
Mark IV Lifetime
Nov 28, 2005
7,162
MA
I have been corrected by someone "in the know" I should have been more clear, 2 Hot laps @ nardo, but a total of 5 laps before fill up (in and out making up the other 3).

Thank you for correcting me......
 

bigdan40

GT Owner
Apr 17, 2006
244
DUROC, I see you are in NY! Did you buy the '05 that was at Pleasantville Ford? I'm just over the line in CT, where are you? Dan
 

fjpikul

GT Owner
Mark IV Lifetime
Le Mans 2010 Supporter
Jan 4, 2006
11,707
Belleville, IL
Might be interesting knowledge for you all that one of the guys on the forum and a GT owner produces the plastic they make the tanks out of (name withheld to protect the innocent.)
 

Silverbullitt

GT Owner
Mar 3, 2006
1,757
Lago Vista, TX
fjpikul said:
Might be interesting knowledge for you all that one of the guys on the forum and a GT owner produces the plastic they make the tanks out of (name withheld to protect the innocent.)

They also make Frank's inflatable doll collection.
 

griffbl

GT Owner
Mark IV Lifetime
Jul 8, 2006
84
Dallas, TX
Fuel Gauge, Actual Mileage and Illusions...

Duroc-

Thanks for pointing that out.......I wondered about mileage, given the fact you can also watch the gauge move, and I was concerned given my driving habits are usually pretty sane......A big, detailed gauge, combined with a relatively small fuel tank equals the illusion of somthing being much worse than it actually is.

Griffbl
 

DUROC

GT Owner
Aug 6, 2006
57
Westchester, NY
Griffbl,
Very glad the post was useful to you.
DUROC
 

Neilda

GT Owner
Oct 19, 2005
3,559
London, UK
I've just driven (yesterday) coast to coast in France to get home and with only 3 fills of gas. I could not drive at insane speeds but would say my average was about 120mph which in 6th has the engine just ticking over at 3,000 rpm.

Having driven a few thousand miles over 3 weeks I feel much more confident and comfortable with the GT. Not only was it a photographers magnet in France, it reigned supreme on the highway and humiliated several 911's (isn't 3rd gear a lot of fun?!! :biggrin ) along with many silly French cars...



I missed the rally :frown but am catching up on all the reports. Sounds like you all had a great time... Did someone get the signed print I sent over?
 

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Neilda

GT Owner
Oct 19, 2005
3,559
London, UK
Had an Aston join us in the South of France too....
 

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