I managed to get 30 mpg the one and only time I drove for an extended distance at a controlled 70 mph. (I was in Virginia). But on controlled drives to Philly I have managed 25mpg at 85 to 90 mph. I am one of those who cruise at 90mph and I have never gotten less than 22 mpg. Oh! and I confess I use slick 50!
Fuel Ecomomy!
- Thread starter NSXNEV
- Start date
nsxtasy said:30, maybe. But 33?
Well, maybe if the trip was downhill both ways, and the wind blowing from behind...
Or maybe at very high altitudes?
I once got 30mpg going 70 with 23.0mpg previous tank and 22.8mpg following tank. On long trips with stopping only to fill-up, I get 26-27mpg going 80. Longterm, I'm right at 21mpg. I think I can get 35mpg going 59.
you guys with good gas mileage must really be feathering the engine. Ive gotten about 26mpg driving 75-85 on the highway on a trip.
Regular running around about 20-22mpg.
Our good gas mileage is really amazing, isnt it?!
Regular running around about 20-22mpg.
Our good gas mileage is really amazing, isnt it?!
The one and only long trip I've had mine on was bringing it back from Chicago to KC when I purchased it last June. The former owner used it as daily transportation and told me that 30 mpg was not uncommon on freeway trips. I was a little skeptical till I got 27-29 on the way home going about 75 the whole way. One thing that will definately affect mpg is the wind. I've found that a good tailwind will add up to 5 more mpg in some instances. (All stock '91 5 spd.)
33mpg? Wow, I don't even get close to 20mpg on my `96 4 banger Accord (~16.5mpg)... granted I don't drive like your average soccer mom...
hey zipy, nice to see theres another KC nsx in the neighborhood.
Folks-
My next tank only produced 25 mpg, but that was mixed city/highway, with highway being at 80 m.p.g. Glad to see others have gone into the 30s with highway milage.
Nev
My next tank only produced 25 mpg, but that was mixed city/highway, with highway being at 80 m.p.g. Glad to see others have gone into the 30s with highway milage.
Nev
My last few tanks have averages between 22MPG and 23 MPG, thats mostly city driving with a few longer (50 or so miles) highway trips. The highway trips are at 80 mph or better. I cant even begin to complain about the mileage.
Blue Knight said:
97 goes in my baby,
,but it costs £3.72 per uk gallon
Remember, there are (at least) two different ways of measuring octane, and I'm not sure that something called 97 octane in the UK is using the same measurement scale as the octane numbers used in the States. In the States, the octane number on the pump is (RON+MON)/2, which is the average of the Research Octane Number (RON), and the Motor Octane Number (MON). Technically, this number is an "anti-knock index". I'm not sure but European octanes might be labeled using MON only...?
nsxtasy said:
it is measured in RON.the normal unleaded is 95,the super unleaded is 97
I consistently get 30-31mpg on 200+ mile runs via both freeway and through towns. Average speed is seldom over 80.
Gas Mileage
I bought my 95T NSX in Florida and drove it home to Oklahoma. I checked the mileage for 1000 miles of the trip. I was not trying to get good mileage. In fact I enjoyed the acceleration quite a bit but nothing over 100MPH.
I averaged 26.5 mpg overall. At first I thought I had made a mistake and not recorded a fillup. I calculated mileage for each leg and then the total. All were in very close agreement.
I have since added Competch headers and a Tubi exhaust system. I am anxious to see if there is any improvement on my next long trip.
I only get about 25 MPG in my 2000 Honda CRV regardless of how I drive.
I bought my 95T NSX in Florida and drove it home to Oklahoma. I checked the mileage for 1000 miles of the trip. I was not trying to get good mileage. In fact I enjoyed the acceleration quite a bit but nothing over 100MPH.
I averaged 26.5 mpg overall.
At first I thought I had made a mistake and not recorded a fillup. I calculated mileage for each leg and then the total. All were in very close agreement.I have since added Competch headers and a Tubi exhaust system. I am anxious to see if there is any improvement on my next long trip.
I only get about 25 MPG in my 2000 Honda CRV regardless of how I drive.
33? No way!
I get around 20mpg from freeway driving, but never had a tank better than 24. On average I get 17mpg. How you guys get in the high 20's is WAY beyond me...and I'm not exactly a lead foot either!
I get around 20mpg from freeway driving, but never had a tank better than 24. On average I get 17mpg. How you guys get in the high 20's is WAY beyond me...and I'm not exactly a lead foot either!
Re: 33? No way!
I can think of a few possible reasons:
1. You never did any long-distance driving with zero or one stops on an entire tank, driving at constant speed.
2. You have mods on your car.
3. Traffic on the 405.
I can think of a few possible reasons:
1. You never did any long-distance driving with zero or one stops on an entire tank, driving at constant speed.
2. You have mods on your car.
3. Traffic on the 405.
Re: Re: 33? No way!
I do believe my 24mpg tank fit that criteria, but you're somewhat right about this. Out of curiosity, at what constant speed would you guess gives the best mileage?
I'm Mr. Stock...fascinating that you wouldn't already know that
Actually, I suspect my overall average mileage is low since a large percentage of my NSX's mileage (at least for the first 10,000 miles) came from short 4.5 mile surface street hops to-and-from work.
I do believe my 24mpg tank fit that criteria, but you're somewhat right about this. Out of curiosity, at what constant speed would you guess gives the best mileage?
I'm Mr. Stock...fascinating that you wouldn't already know that
Actually, I suspect my overall average mileage is low since a large percentage of my NSX's mileage (at least for the first 10,000 miles) came from short 4.5 mile surface street hops to-and-from work.
Re: Re: Re: 33? No way!
A speed that's slow enough to be a safety hazard, such as 50 mph.
If you fill the tank, and then drive a constant 50 mph without stopping for 300 miles... you'll go crazy.
Plus, there will be no way to stay awake that long without caffeine; with caffeine, there will be no way to keep going for six hours without making a stop.
akira3d said:Out of curiosity, at what constant speed would you guess gives the best mileage?
A speed that's slow enough to be a safety hazard, such as 50 mph.
If you fill the tank, and then drive a constant 50 mph without stopping for 300 miles... you'll go crazy.
Plus, there will be no way to stay awake that long without caffeine; with caffeine, there will be no way to keep going for six hours without making a stop.
Re: Re: Re: Re: 33? No way!
That's a good one! I'll have to remember that.
That's a good one! I'll have to remember that.
My 91 5-speed got 29.5 mpg on a trip from Houston to Sacramento. I used cruise control for most of the trip, averaging 75 mph. I drove that trip nonstop, 2000 miles, 30 hours. It was my test drive home after buying the car....
33 MPG is great. My 91 gets about 20 in the city and if I get out on the Highway the mileage jumps to 25 or so. If I held my speed down to 55 MPH and stayed on cruse control I can see getting 30 MPG or more assuming non RFG fuel. But driving a NSX it’s really hard to not drop down a couple of gears and kick in the VTEC.
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To all who are getting +30mpg. How are you doing your actual calculation? If it's by looking at the half-way mark on the fuel gauge and dividing the trip meter reading by half the size of the gas tank itself, then that could be the reason for the inflated(wrong) mileage figure. All fueltanks, to my knowledge use some kind of floating ball mechanism to monitor fuel mileage. That is why you see tremendous mileage figures the first half of the fuel gauge cycle, then slightly less and less better mileage figure the second half. I could be wrong, but that's always the pattern I've seen on any car I've ever owned in the past. I've never really paid much attention to it, but my stock '91 gets nowhere near 30mpg under any condition.
svalleynsx said:
You can't accurately calculate mileage based on the reading of the fuel gauge. The proper way to calculate it is to fill the tank, drive X miles per the odometer*, fill it again, see how many gallons it took, and do the division. The emptier the tank is before you refill it, the more miles and gallons you have, and the more accurate your reading will be (by diluting any possible variations in how full the tank was each time the pump clicked off).
*If you are using tires other than the stock sizes, you can adjust the odometer reading to compensate for any difference in the nominal outer diameter of the tire size.
