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Author Topic: Does a manual transmission save more gas? Back to Topics
binhboy

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Orange County

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Message Posted: Oct 14, 2013 7:34:29 PM

I was wondering if a manual transmission saves more gas than an automatic. Or does it just depend on the driver ?
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Jackson126
All-Star Author Virginia

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Message Posted: Dec 6, 2014 7:41:35 AM

not any more with the new autos
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krazkar
Champion Author Calgary

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Message Posted: Dec 6, 2014 1:50:53 AM

back in the day, they were. They are funner to drive, so it doesn't matter
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HotRod10
Champion Author Wyoming

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Message Posted: Dec 5, 2014 7:32:24 PM

20 years ago I'd have said the manual was better, but I have to agree with Alexi7, the newer automatics would be tough to beat, even by someone who's good with a manual.

I still like the wheel speed control I get with a manual is certain situations such as off-roading or driving on ice. Manuals are still more durable, especially for heavy towing.
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hoopitup2000
Champion Author Virginia

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Message Posted: Dec 1, 2014 1:58:34 PM

A manual in the hands of a skilled driver will win 99.9% of the time.
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Alexi7
All-Star Author Ohio

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Message Posted: Nov 30, 2014 11:19:07 PM

Modern automatics with their lock-up torque converters are tough to beat for efficiency. They are geared taller than most manual trannys and their computer shifts faster than any human could.
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herbiepopnecker
Champion Author British Columbia

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Message Posted: Nov 30, 2014 9:40:07 PM

Depends on if its an old 2 or 3 speed automatic. They SUCKED
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rick_evans
Champion Author Boston

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Message Posted: Nov 30, 2014 7:53:05 PM

Yes, if you know the proper way to drive one.
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GasMiser718
Champion Author Detroit

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Message Posted: Nov 16, 2014 8:20:17 AM

Yes I think they do, but I prefer an automatic now.
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luvmyrv
Champion Author Winnipeg

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Message Posted: Nov 13, 2014 2:06:33 PM

They used to claim it did, but not sure anymore...even back then the difference was only about 1 mpg.
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twt
Champion Author Virginia Beach

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Message Posted: Nov 13, 2014 5:24:19 AM

Not sure, any more.
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eyegotgas2
Champion Author British Columbia

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Message Posted: Nov 13, 2014 5:03:24 AM

I read an article here that said they no longer do. Automatic transmissions have become very fuel efficient
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pinbuster2005
Champion Author New Hampshire

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Message Posted: Nov 13, 2014 2:55:17 AM

hoopitup2000 - "Personal experience. No pixie dust here, just fact."

Exactly, As I said in an earlier post. I had two identical trucks myself except the model year. My 2001 F-150 was a 5-spd std while my 2000 F-150 was an automatic. Both had a 4.2 liter v-6 engine and the same rear end in them and were both long body trucks. I got 20.5 mpg on average with the standard while I only got 18.3 mpg with the automatic driving both the same way over the same roads. On a long trip I could pull 24 mpg out of the standard while I could barely break 20 mpg with the automatic. By the way with the 2001 with the standard I was still getting that mileage after it had 230K + miles on it and the 2000 with the automatic only had 125k on it.
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hoopitup2000
Champion Author Virginia

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Message Posted: Nov 12, 2014 10:18:05 AM

"Not on the newer models"

According to the EPA, yes. In the real world, not necessarily.

Please don't tell me you actually believe the goverment can do something right.
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hoopitup2000
Champion Author Virginia

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Message Posted: Nov 12, 2014 10:16:13 AM

"I smile when reading the Internet expert mechanics assurances of spectacular mpg results from a stick shift verses autos and pause to wonder where all that expertise came from."

Personal experience. No pixie dust here, just fact.

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weddy11
Champion Author Phoenix

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Message Posted: Nov 12, 2014 8:47:39 AM

Not on the newer models.
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LibertyGuardian
Veteran Author Arizona

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Message Posted: Nov 12, 2014 8:36:34 AM

I smile when reading the Internet expert mechanics assurances of spectacular mpg results from a stick shift verses autos and pause to wonder where all that expertise came from.



[Edited by: LibertyGuardian at 11/12/2014 8:39:18 AM EST]
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hoopitup2000
Champion Author Virginia

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Message Posted: Nov 12, 2014 7:46:08 AM

Absolutley, not even close.
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GasMiser718
Champion Author Detroit

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Message Posted: Nov 12, 2014 1:31:49 AM

Yesnthey do...
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hoopitup2000
Champion Author Virginia

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Message Posted: Nov 6, 2014 6:35:44 AM

Yes they can by a huge margin if driven for economy.
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GrumpyCat
Champion Author Alabama

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Message Posted: Nov 5, 2014 10:01:22 PM

It depends on a lot of things. Most people are idiots and can not properly shift a manual without over revving, lugging, or rough shifts. Modern automatics generally equal the best of manuals and often beat manuals.
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selvan777
Rookie Author Sacramento

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Message Posted: Nov 5, 2014 5:01:41 PM

Yes but only if the driver has that goal in mind.
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GasMiser718
Champion Author Detroit

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Message Posted: Nov 5, 2014 4:43:38 PM

Yes, but I am past that...
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ChiefNolarama
Veteran Author Nebraska

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Message Posted: Nov 4, 2014 9:28:16 AM

Manual usally will yield better mpg vs and automatic, but the biggest variable is how the driver uses the vehicle.
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OilerFan
Champion Author Tulsa

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Message Posted: Nov 4, 2014 7:16:27 AM

definitely. An automatic transmission, any of them, cannot anticipate the road and make adjustments. A manual transmission, driven by a human being, can.
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hoopitup2000
Champion Author Virginia

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Message Posted: Nov 4, 2014 6:34:44 AM

Autos are boring & less inefficient except on flat highway cruises.
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hoopitup2000
Champion Author Virginia

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Message Posted: Nov 3, 2014 6:22:18 AM

Let me elaborate . . . . .

YES, with proper driver driving skills, one can do MUCH better with a manual. Especially in city driving. Highway driving, not so much, until you throw in some hills.
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forestghost07
Champion Author Miami

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Message Posted: Nov 2, 2014 11:23:40 PM

"Depends on how you drive."

I agree. All 3 of my vehicles are manual, and give decent MPG when driven conservatively and proper minimum RPM shift points are observed. e.g. 1999 Chevy Blazer 4 x 4, 5 sp., 4.3L V6 - 23 MPG highway (steady 70 MPH)

Rev it high and drive it agressively, it's a fuel monster, low as 11 MPG.
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pinbuster2005
Champion Author New Hampshire

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Message Posted: Nov 2, 2014 1:23:32 PM

bartendlisa - "As several posters have noted, a manual has the potential to be more fuel efficient if driven properly. I have driven an automatic truck identical to my manual, except for 1 model year, and have found mine to get 2 mpg better overall. Same axle ratio, wheel size, etc."

I had two identical trucks myself except the model year. My 2001 F-150 was a 5-spd std while my 2000 F-150 was an automatic. Both had a 4.2 liter v-6 engine and the same rear end in them and were both long body trucks. I got 20.5 mpg on average with the standard while I only got 18.3 mpg with the automatic driving both the same way over the same roads. On a long trip I could pull 24 mpg out of the standard while I could barely break 20 mpg with the automatic.
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hoopitup2000
Champion Author Virginia

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Message Posted: Nov 2, 2014 11:10:06 AM

Yes, with proper driver driving skills, one can do much better with a manual.
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GasMiser718
Champion Author Detroit

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Message Posted: Nov 2, 2014 10:49:00 AM

I only drove a manual transmission car when the vehicke were high performance. So I never saved gas while driving them.
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Awing1
Champion Author Ontario

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Message Posted: Oct 31, 2014 10:06:40 AM

I haven't really compared both because I have always used Auto transmission except my military period when I was young, but I'm feeling manual transmission would be more efficient on gas mileage. Is this old time thinking?
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dontuknowOH
Champion Author Ohio

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Message Posted: Oct 31, 2014 9:35:57 AM

traffic cop >>> "Times have changed" <<< I agree with His opinion on the automatic trannies on average doing better than the STD. The very experienced driver may on occasion knowing His vehicle much more than the ordinary driver is an exception.

Remember the older carburetor vehicles had a so called "pump shot" incorporated to enable reasonable performance. Each time the G..pedal was pressed as when shifting a manual through each gear change, there was a squirt stream of raw fuel shot into the carb throat then to be atomize into a mist. This process prevented lean-outs at all speeds, when shifting manuals. That was a hinder to Std. shifting fuel economy.

Back then the older automatics in comparison only needed one pump shot instead of three to four used operating a manual. The bigger loss in fuel mileage was the slippage in the torque converter at various speeds/clumsy shift points in relation to engine power, and no O-Drive gearing ratios.

Todays EFI/ECM/Electric/Monitored/engine tuning combined with Electric timing/variable cam timing/multi gearing changes and multi valve OHC with reduced valve train, V/S the older >>> (pushrod/rocker design)older engines,= "change" Less weight, more aluminum in use, but people want more luxuries/devices in the vehicles, very competitive market, mileage ~ ~ ~ I'm for the automatic TWD.
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badbobKY
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Message Posted: Oct 30, 2014 9:23:02 AM

yes
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HideMKE
Champion Author Milwaukee

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Message Posted: Oct 30, 2014 9:11:35 AM

yes if you know your car...
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LibertyGuardian
Veteran Author Arizona

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Message Posted: Oct 30, 2014 8:13:23 AM

Myth...Today's modern technology in automatic transmissions and monitoring equipment on board are generally superior to manual shifting in nearly every aspect.
Drivers using manual transmissions tend to view themselves as a "professional" road racing hero and more often than not abuses the vehicle's best economic efficiency by shifting late, over revving the engine and exceeding the best shift points for maximizing fuel economy.
A manual trany in the hands of the average driver today, seems to immediately turn just about every one of them into a Dale Jr, Tony Stewart or Jimmie Johnson
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Jackson126
All-Star Author Virginia

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Message Posted: Oct 30, 2014 7:28:09 AM

no
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ballotmaster
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Message Posted: Oct 27, 2014 1:05:23 AM

No
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weddy11
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Message Posted: Oct 26, 2014 9:54:01 AM

Not on the newer cars.
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krazkar
Champion Author Calgary

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Message Posted: Oct 25, 2014 10:34:35 PM

Back in the day they did
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GLM4205
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Message Posted: Oct 25, 2014 5:43:04 PM

Yes
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twt
Champion Author Virginia Beach

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Message Posted: Oct 25, 2014 5:09:04 AM

Manual shift, gives better mileage.
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Mikeyy1960
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Message Posted: Oct 24, 2014 7:54:36 PM

depend on driver and your commute...
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fumanaz
Sophomore Author Arizona

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Message Posted: Jan 20, 2014 9:02:24 PM

No
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lyanMI
Champion Author Detroit

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Message Posted: Jan 20, 2014 8:06:09 PM

Automatics are becoming more fuel efficient these days
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WEDDY
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Message Posted: Jan 19, 2014 11:00:52 AM

Depends on the car and of course the driver. Some cars show better EPA with manual, and others show better with automatic.
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Boyrr
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Message Posted: Jan 19, 2014 10:04:58 AM

Not with the current machines
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gvan
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Message Posted: Jan 18, 2014 12:47:13 PM

"Coasting in neutral can waste gas because the ECM sends gas to the engine
to maintain idle but shuts down fuel during engine braking action."

And to back that up:

January 15, 2014
Shifting into neutral and coasting does not save gas. When the vehicle is coasting with the transmission in gear, the computers turn off the fuel injectors until the engine slows to near idle speed. The engine is still turning over but using no gasoline. “Turning off the fuel injectors means the drivetrain is turning the engine rather than the engine turning the drivetrain,” says RockAuto.com’s Taylor. “This actually helps slow the vehicle and slightly reduces brake pad wear when coming to a stop.”
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traffic cop
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Message Posted: Jan 14, 2014 1:34:47 PM

Times have changed. A computerized six-speed automatic is going to outperform a manual four- or five- speed manual box. If you're considering a purchase with a manual, consider the reduced market you'll have for re-sale when you're ready to buy again.

Occasionally there are those "stupid crook stories," where some jerk tries to steal or hijack a car, only to be thwarted by a manual box he doesn't know how to operate.
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magpie2013
Champion Author Milwaukee

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Message Posted: Jan 12, 2014 6:26:09 PM

It did way back when, but now things have changed including the gas, so no I don't believe so.
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rick_evans
Champion Author Boston

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Message Posted: Jan 8, 2014 7:39:52 AM

Sal30 --"With an auto, it hurts the car to shift to neutral during motion, but with a manual, it's safe for the car. "

1. Coasting in neutral is less safe for car control especially when on a
downgrade because.

2. Coasting in neutral can waste gas because the ECM sends gas to the engine
to maintain idle but shuts down fuel during engine braking action.
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MertieMan
Champion Author Lexington

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Message Posted: Jan 8, 2014 5:03:23 AM

It most definitely depends on the driver and his technique in using the manual transmission. You cannot skip gears and effectively get good gas mileage.
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