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View Poll Results: 70 mph miles per gallon?
42 3 20.00%
44 0 0%
46 2 13.33%
48 1 6.67%
50 2 13.33%
52 0 0%
54 0 0%
56 2 13.33%
58 0 0%
60+ 5 33.33%
Voters: 15. You may not vote on this poll

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Old 12-27-2019, 04:11 AM   #1 (permalink)
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How many MPG are you getting at 70 mph (GPS)

Just a poll to see where everyone is at!
Also to add oem speedo's read 2% fast. So if you're going off an accurate oem speedo 71.4 displayed = 70 actual

Comment what vehicle sub trim and what ambient temp for your vehicle.

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Old 12-27-2019, 04:13 AM   #2 (permalink)
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"Proper Shitbox" (SOLD) - '96 Honda Civic LX fully optioned no weight reduction
90 day: 41.9 mpg (US)

Plue Brius - '10 Toyota Prius II
90 day: 57.73 mpg (US)

The Smoke Bomb - '96 Ford Ranger
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Prius 70F 70 mph ~ 46 mpg
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Old 12-27-2019, 04:38 AM   #3 (permalink)
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Translate to ton-miles. That, at least, provides context.

Payload expressed as tons (percentage thereof) X fuel burn

1,280-lbs payload my pickup
with driver X 20-mpg (@70) = 10 ton/miles per gallon.

150-lb EM’er X 45-mpg (@70) = 3.3 ton/miles per gallon.

When I hitch the trailer (8k), it shoots to over 60 with four passengers also present.

Four persons uncomfortably aboard
an air-conditioned go kart hits a staggering
21 T/M gallon.

Loserville is a town of single person vehicles.
Fuel burn or fuel type just doesn’t matter.

.
.

Last edited by slowmover; 12-27-2019 at 04:53 AM..
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Old 12-27-2019, 08:42 AM   #4 (permalink)
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"Proper Shitbox" (SOLD) - '96 Honda Civic LX fully optioned no weight reduction
90 day: 41.9 mpg (US)

Plue Brius - '10 Toyota Prius II
90 day: 57.73 mpg (US)

The Smoke Bomb - '96 Ford Ranger
90 day: 23.83 mpg (US)
Thanks: 196
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* 40mpg plus vehicles are the focus
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Last edited by hayden55; 12-27-2019 at 10:53 AM..
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Old 12-27-2019, 01:56 PM   #5 (permalink)
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I dunno! I only drive 70 mph a few times a year, when on long (multi-day) trips.

The rest of the year, I toodle along the scenic side roads at ~50 mph / 80 km/h.

But theoretically, an unmodified 5-speed Mirage is good for ~42 MPG US @ 70 mph on level ground in warm weather.

The Metro/Firefly (unmodified) is about the same.
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Old 12-27-2019, 01:59 PM   #6 (permalink)
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Quote:
Originally Posted by slowmover View Post
Translate to ton-miles. That, at least, provides context.
An unimportant context on this particular forum. Perhaps makes sense elsewhere, though.
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Old 12-28-2019, 07:36 AM   #7 (permalink)
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I recently broke 50mpg at 70 in my Acura TSX swapped Insight on a longer trip. It's hard to know if there wasn't some external factor like a tail wind. MPG at that speed seems pretty variable, I've seen as low as 46, but road conditions in winter are highly variable. I'm willing to bet 50+ in summer will be normal. Could probably break 60+ with P&G.

My other (stock) Insight easily maintains 65-70mpg in winter at 70mph.
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Old 12-28-2019, 11:59 AM   #8 (permalink)
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I’m not even on your chart but I still enjoy and try to contribute to this site. Been here a long time, I do not own a Metro any longer.
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Old 12-28-2019, 02:41 PM   #9 (permalink)
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Hmmmm... when was the last time I went 70? On the motorcycle I think.
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Old 12-29-2019, 04:53 AM   #10 (permalink)
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Amateurs.
I get around 120mpg at 70mph in the summer in the leaf.
To be a little more fair my wife's hybrid sonata gets around 40mpg, during the summer at 70mph.

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