Losing gas really quickly?

[USNguy]

I'm getting something similar that's really bugging me.

Just finished a 2200 mile road trip, and I noticed that my range would decrease significantly faster than my miles were increasing, even while my MPG was constant or even improving on average by .1-.5 over an hour, from 41.5 to about 42. When I filled the tank it had 440 mile range, when I got the low fuel light I had only gone around 370 miles. Is it possible there's a slight fuel leak or is Honda padding their range calculation?

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[gtman]

I'm getting something similar that's really bugging me.

Just finished a 2200 mile road trip, and I noticed that my range would decrease significantly faster than my miles were increasing, even while my MPG was constant or even improving on average by .1-.5 over an hour, from 41.5 to about 42. When I filled the tank it had 440 mile range, when I got the low fuel light I had only gone around 370 miles. Is it possible there's a slight fuel leak or is Honda padding their range calculation?

I doubt there's a fuel leak. I think all manufacturers tend to be a bit "optimistic" with their range calculation.

 

[rwsmith123]

I only pay attention to the range when it’s down to the point where I need to fill up.

 

[tacthecat]

You're not leaking. Range estimate Start is based on prior mileage and is only REDUCED by current mpg estimate. In my experience once it's set it never goes up - it may stay the same if you're now getting great mpg but will plummet if you are getting lower - think a long uphill or driving 80 when you were previously averaging 45.

 

[Micah]

I've gotten up to 550 miles on a tank. But that was nearly all highway when I had a long commute every day and only drove back and forth to work. Now thanks to Covid I only work one day a week in the office, and while my tanks are lasting much longer as a result ... I'm averaging about 400 miles to a tank of fuel. I fill up after the low fuel warning comes up, usually driving another 30 miles most of the time. Fill ups are around 12 gallons.

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