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Does manual transmission really improve gas milage anymore?

Originally posted by: LordJezo
?

I get 30 mpg in my Impala w/ auto trans... does manual really make a huge difference now a days?
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If the driver knows how to shift efficiently.
 
Depends on many factors, but, yes -- minor increase. You can compare on cars / trucks that offer both and see for yourself.

RE: ManualTX < weight and < drivetrain loss = more efficient overall, assuming same number of gears. AutoTX is very close these days.

Usually difference I've seen is 1-2mpg.
 
Originally posted by: Pepsi90919
no. autos have been equipped with lockup converters for 20 years or more now, and CVT is even more efficient than that.
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CVT maybe better than MTX. Still rather rare. According to EPA conventional auto vs manual numbers you'll see slightly higher figures on the Manuals. In real world I'd say less noticible, possibly even less efficient on manual as (if like me) you tend to drive more spiritedly. 😀
 
It depends on the driver. A good driver will be able to get more MPG out of a manual. You also have to consider the number of gears. A 5 speed manual will be better on gas than a 3 speed auto because you will be able to keep your rpms lower at high speeds. But as I said, it depends on the driver. If you are terrible at stick, then you will probably waste more gas because you don't know where that sweet shifting spot is. On my 87 grandam (manual), I get about 33mpg city and 40 highway. Have other people drive it through the city and the MPG goes down a lot. Have other people drive it on the highway, still 40mpg. Of course, my car is older so my info may be out of date, so don't follow what I'm saying to the bank.
 
Yes, if the driver knows what he's doing.

Autos will never get past one important fact: that it takes a couple HP to run the pumps that shift the gears for you.
 
Originally posted by: Superwormy
But manuals are way more fun to drive 🙂
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That's what I'm saying. 😉

I prefer a manual because I hate driving an automatic, gas mileage or no gas mileage....
 
Originally posted by: Fiveohhh
Originally posted by: Superwormy
But manuals are way more fun to drive 🙂
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until your in stop and go for an hour😛
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ie - nj most places during the day.


does anyone have any websites related to this debate that would provide some "proof" on a professional test sence?
 
it seems like manuals would only be fun to drive if you were driving in a place where there were relatively few stops, and you could go pretty fast.
 
Originally posted by: dman
Depends on many factors, but, yes -- minor increase. You can compare on cars / trucks that offer both and see for yourself.

RE: ManualTX < weight and < drivetrain loss = more efficient overall, assuming same number of gears. AutoTX is very close these days.

Usually difference I've seen is 1-2mpg.
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not nearly as much as they did during the '80's.

the 4th gear OD makes a big diff. the old 3 speed autos used a lot of gas vs the 5 speed manuals.

now, 4 speed auto vs 5 speed manual, still a slight edge to Manual, but no much anymore.
 
Originally posted by: Thegonagle
Yes, if the driver knows what he's doing.

Autos will never get past one important fact: that it takes a couple HP to run the pumps that shift the gears for you.
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But manuals will never get past one important fact: automatics shift gears faster than any manual trans driver will, ever!
 
Originally posted by: Iron Woode
Originally posted by: Thegonagle
Yes, if the driver knows what he's doing.

Autos will never get past one important fact: that it takes a couple HP to run the pumps that shift the gears for you.
Click to expand...
But manuals will never get past one important fact: automatics shift gears faster than any manual trans driver will, ever!
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yeah because my shift speed in a manual matters OH SO MUCH in the real world of driving.

 
Originally posted by: Iron Woode
Originally posted by: Thegonagle
Yes, if the driver knows what he's doing.

Autos will never get past one important fact: that it takes a couple HP to run the pumps that shift the gears for you.
Click to expand...
But manuals will never get past one important fact: automatics shift gears faster than any manual trans driver will, ever!
Click to expand...

i beg to differ, ive bene in many manual cars where instead of shifting fast the engine would jsut rev to all hell and then shift... when in a manual it could have been done in a fraction of the time, and without redlining
 
Manual Tranny's are more fun to drive than auto's... The little ford ranger I used to have got really great gas mileage until it died 🙁
 
I think part of the efficiancy of manuals comes from the fact that most are 5 speeds. Most autos are 3 or 4 speeds and only higher end (read generally expensive sporty) cars come with 5 speed autos. Having more gears allows for better fuel effiency.
-doug
 
Originally posted by: Glitchny

i beg to differ, ive bene in many manual cars where instead of shifting fast the engine would jsut rev to all hell and then shift... when in a manual it could have been done in a fraction of the time, and without redlining
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Thats an opinion though, the Fact is auto's do shift faster and is why trailor series racers use Powerglides and C4's 😉

 
Originally posted by: Glitchny
Originally posted by: Iron Woode
Originally posted by: Thegonagle
Yes, if the driver knows what he's doing.

Autos will never get past one important fact: that it takes a couple HP to run the pumps that shift the gears for you.
Click to expand...
But manuals will never get past one important fact: automatics shift gears faster than any manual trans driver will, ever!
Click to expand...

i beg to differ, ive bene in many manual cars where instead of shifting fast the engine would jsut rev to all hell and then shift... when in a manual it could have been done in a fraction of the time, and without redlining
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You can differ all you want.

The reality is autos shift faster than any manual can. To argue otherwise is stupid.

And for Guapo337 the faster an auto shifts the more effecient it is. When an auto makes a slow shift it wastes fuel and increases wear due to friction.

My 3 speed auto (mopar 998) shifts in less than 1/10 of a second. Bang! The tires squawk and it will really snap your neck back. Did I mention this is my street/bracket car?

Autos are way more consistant in drag racing too.

A properly setup auto (RWD) can be as effecient as a manual version.
 
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