"Average" Fuel Economy? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 45 (permalink) Old 07-06-2010, 03:42 PM Thread Starter
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"Average" Fuel Economy?

What's the "normal" or "average" fuel economy and range on a single tank of Gas that you are all getting?

I just got the bike very recently and have been filling it up from a 5 gallon gas can in the garage until the last few days.

The first time I measured it, was all highway speeds at 70-75MPH and I got 64MPG. Second trip was a mix of city and highway and I got 55MPG.

Is that normal? I'm riding with a single (200lb) driver, no passenger, and empty saddle bags. I am driving pretty conservatively too. Given that mileage, it might well become my primary method of commuting 31 miles to work. The weight feels a bit funny with a 30lb backpack on riding along, but you get used to it after a day or two.

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post #2 of 45 (permalink) Old 07-06-2010, 04:08 PM
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I've been keeping track to see how accurate my gas guage is. I've been averaging 48-50 mpg.

Commute 60 miles round trip, all freeway speeds.
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post #3 of 45 (permalink) Old 07-06-2010, 04:36 PM
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What size tires are you running? A smaller (stock size) front tire will make your speedometer about 10% optimistic, while a larger than stock rear tire will lower your RPMs in any given gear which will actually increase your gas mileage.

48-50 mpg at steady highway speeds is about what most of us get.


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post #4 of 45 (permalink) Old 07-06-2010, 04:40 PM Thread Starter
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Stock tires.

Me thinks I need to check speed with my GPS.

And I WONDERED why people were being impatient when I was doing 10 over the speed limit!
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post #5 of 45 (permalink) Old 07-06-2010, 04:52 PM
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I always go 5mph over the speed limit. ran along side my wife's car while she was going 60 mph and my bike's speedo was at 65. I'm a fat boy so I only get an average of 45mpg combined city and highway driving and average 120 without reserve on a tank of gas with both tires stock size.

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Last edited by Chavisimo; 07-06-2010 at 05:42 PM.
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post #6 of 45 (permalink) Old 07-06-2010, 05:13 PM
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well not using res i get between 115-130 miles to the tank. and i too is a fat boy lol . i have the over sized tires and the home made drag pipes with the air/fuel screws at 3 turns.

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post #7 of 45 (permalink) Old 07-06-2010, 05:30 PM
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I averaged 45 mpg and I'm 260 (ish). Yes, your stock tires are jacking up your speedo by about 10% so your trip meter will be off by about 10% too as I recall. The 110 front tire closes that gap considerably, to +-3%.

I don't really understand the logic behind the Jap speedos reading high especially on the smaller displacement bikes. My buddy's 01 shadow 750 reads at least 10% high and he thinks I'm always speeding when we ride together. My 1500 is pretty close to spot on with a GPS, for whatever reason, with stock tire sizes.

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post #8 of 45 (permalink) Old 07-06-2010, 07:18 PM
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I Just went 138 miles to reserve.

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post #9 of 45 (permalink) Old 07-06-2010, 07:40 PM
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Interesting posts! I thought the VN750 speedo's were pretty accurate. I guess not. I just sold a 2004 Honda VTX1300C and it too was about 10% too high. That was digital, so it could be fixed with a speedohealer. Is the only fix for these a tire change?

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post #10 of 45 (permalink) Old 07-06-2010, 10:30 PM
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My bike, with stock size tires, indicates about 10% high on the speedometer and overreports mileage by about 1.7%. I'm not too concerned about correcting anything. I just ride at indicated 10% faster than I really want to go and leave it at that. 10% is nice easy math to do on the fly.

My average mileage is around 52, high tank 61. High miles on a tank 173.7.

The 64 at highway speed is an impressive number. Are you sure you got it the same amount full before and after that tank?
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