I decided against a fill up prior to a commute (to beat traffic by seconds lol) and then later bypassed gas to get to the gym on time for a class.

I know they're not going to allow a car to run out of gas while gauges still indicate some distance, but I'm no pioneer in testing stuff like this, as pioneers were shot in the back with arrows.

We had a great thread about testing how accurate the gauge for remaining gas is. Has anyone done the Top Gear thing and just let it run out? This was closer for comfort than I ever allow....

 

I believe I would have run out before I got to 0 as recounted here...
https://www.jaguarforums.com/forum/f...6/#post1491951

 

You got me beat by 6 miles. However, I would advise against testing the limits. Cavitating the fuel pump by letting it run dry could cause it serious damage.

 

Yeah.... definitely wasn't thrilled, but thought I should get a shot. I hate them cavitations.... so won't be testing it any more. I didn't really realize one time could cause damage, but it makes sense. Cheers, as always thanks.

 

My maximum fill was 17.109 gallons. This was not the farthest I went on a tank, but was the most fuel added. I did not note the indicated mileage to empty.

I expect that with the high pressure fuel system the engine would cut off almost immediately on empty, with minimum operation dry. Still, it's not recommended.

 

Well, following the discovery that the fuel stop I was planning to use was shut, I had a 10 mile drive to the next station with an indicated range of 7 miles.

Made it with less than 2 miles showing on the display.

No signs of fuel starvation.

I once drove a supercharged Mini for a good 5 minutes (very carefully) with the miles to empty having dropped from 0 to --.

 

I know on my 2010 XFR that when the fuel range to empty reads "---" (ie the tank is supposedly empty) there is still a good 10 litres (approx 2.5 gallons) left in it. I have driven the XFR for 50 km after the "---" reading with no problems at all.
Haven't tried this on the F-Type though.

 

lol..I do that with my MINI on a regular basis just to save a few pennies at the next fuel stop.

 

tl;dr - I am no math major, but I think 0% w/ 1 or 2 miles to go actually means you have 16-20 miles as buffer.
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my above picture w/ 2 miles at 0% felt good... no sputters, etc.

At $3.05 premium on that night's fill, I spent $54.17 which filled it up to the tippy top (and runoff). That's 17.761 gallons.

We are an 18.5 gallon tank.

So can we safely estimate that 0%, and 1 or 2 miles to go, really means you have 3/4 a gallon which would safely get you an extra 16-20 miles depending on how you are driving?

ie they engineered in a hell of a lot of miles as buffer, because I bet that cavitation issue was real, and hurt the car.... so they dial it way back?

 

As I mentioned in the above link, I put in 18.51 gallons, when the car indicated I still had 40 miles left. I hope that was an anomaly!

 

I'm not sure the algorithm used to calculate miles to empty. On my previous car, it was based on the last ten miles, so could be wildly inaccurate. For consistent driving it wasn't bad, but significant hoonage in the head or tail of the tank could really throw off the estimate.

I have noticed times where it says I have 50 miles left and ten miles later it still reports that. It's not something I'd bet money on.