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Old 03-04-2013, 10:18 AM   #81 (permalink)
PaleMelanesian
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Join Date: Dec 2007
Location: Texas
Posts: 2,305

PaleCivic (retired) - '96 Honda Civic DX Sedan
90 day: 69.2 mpg (US)

PaleFit - '09 Honda Fit Sport
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90 day: 46.91 mpg (US)
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Quote:
Originally Posted by ever_green View Post
With a 3.2L Acura TL i used to get better mileage driving at 45mph vs 40mph. This was because i could upshift the automatic tranny to 5th gear at 45mph. The TCU doesn't allow 5th gear below 45mph. This let me cruise at 900-1000rpm achieving 40-45mpg whereas at 40mph i was cruising at 1750rpm and getting 35-40mpg.

So it depends on transmission/gearing and engine/torque.
Here's a trick for Honda automatic transmissions. When you're at 40 mph, do a quick D-N-D shift and it should pop right into top gear. I use that all the time in the Odyssey. Once it's in 5th it will hold it down to 38 mph, you're just tricking it into thinking it was already there.

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11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles
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