09-10-2012, 10:15 PM
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#1 (permalink)
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Ultimate Fail
Join Date: Feb 2008
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Any benefits to paddle shifting an automatic ?
My mum has a Fit 'sport' that is automatic .
It has paddle shifters on the steering wheel.
Would these help the F.E. over letting the car shift itself ?
The car has an fuel economy display, which is good - she's hooked on getting the high numbers .
Her usual average is " 41 MPG " with a one time high of 45, but based on tank fills it seems to be off around 4 MPG.
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09-10-2012, 10:25 PM
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#2 (permalink)
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Master EcoModder
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its nice for around town, especially when you need to cruise at say, 35mph and the next upshift isn't until 40mph, but traffic won't allow.
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09-10-2012, 10:53 PM
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#3 (permalink)
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Batman Junior
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Yes, if using the paddles will permit an upshift sooner than automatic mode.
EG: http://ecomodder.com/forum/showthrea...rly-21149.html |
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09-11-2012, 01:08 PM
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#4 (permalink)
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...beats walking...
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Quote:
Originally Posted by MetroMPG
Yes, if using the paddles will permit an upshift sooner than automatic mode.
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...yes, this is exactly what happens with the 6-speed automatic in our 2011 Cruze. It wants to stay in 5th gear until you get at/above 45 mph, regardless of the engine load, so I "slap-shift" it and force it into 6th gear at 40 mph (~ 1500 rpm)...and the fuel consumption goes down sooner. |
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09-11-2012, 04:56 PM
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#5 (permalink)
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Master EcoModder
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Tank - '76 Chevy El Camino Classic 90 day: 25.89 mpg (US) Sabrina - '91 Mercedes Benz 190 E 90 day: 37.07 mpg (US) Angel - '88 Mercedes-Benz 420SEL Last 3: 23.01 mpg (US) Quicksilver - '04 Mercedes-Benz CLK55 AMG Cabrio
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Yep In my 04 Mercedes I have been able to save about 1-2 MPG around town because i could upshift earlier and leave it in a higher gear longer. And my wife gets about 3 MPG better when she manually shifts her Touareg, But that's because otherwise she drives it like it's a Nascar.
So as long as you have the patience to pay attention to it then yes it can be beneficial
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Tank:
(No actual EPA numbers for car just used F/E numbers when i first got it)
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09-16-2012, 01:45 AM
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#6 (permalink)
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EcoModding Apprentice
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upshifting drops rpms, in my case 2250rpms to 1500rpms(3-4), 16-20mpg
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09-16-2012, 06:07 PM
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#7 (permalink)
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Master EcoModder
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If it will let you lug it the bsst you can. When I use the sport mode of the insight it will let you select and it will hold a gear. The only problem is in sport mode that allows manual gear selection the over all ratio is changed, so any speed above 45 mph it runs a higher rev than standard mode.
Having said that I managed pretty decent mpg in sport mode in 7th gear as the engine stayed the same rpm and the assist meter swung about as I went up hills and such vs the revs going up and down too.
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