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Shifting in neutral to raise gas mileage

njdevilsfan87

njdevilsfan87

Platinum Member
Today I pulled off a highway and my gas tank was reading empty. Low fuel light had been on a for a decent amount of time... so, I had about 2-3 miles to reach the gas station, so I frequently started shifting into neutral when I wasn't using the gas. Has anyone experimented with this and seen an increase.

I'm driving 75/25 (highway/city) and getting about 30mpg. I wouldn't mind getting an extra mile or two when I'm driving 90-100 miles a day.
 
I wish this had been asked before 😉

In general, if your foot isn't on the gas and the wheels are driving the engine (rather than the engine driving the wheels), you will consume zero gas. Neutral will use a mild amount of gas to keep the engine idling.
 
Originally posted by: SearchMaster
you will consume zero gas.
Click to expand...


Not this BS again.



And not to mention alot of states it's illegal to not have control of your vehicle, in which control means putting it in neutral.
 
I assume your car is of recent age. It will actually use no fuel when you are coasting to a halt IN gear because the engine is being turned by the wheels. It's burning little or no gas at this point. Compare this to coasting in neutral where the where it still uses fuel to keep the engine idling.

Coasting in neutral is only more efficient when you can coast farther without applying any throttle, although it is illegal in some states. I wouldn't recommend doign this because you never know when you'll have to make an emergency maneuver and apply throttle.

In summary, just keep it in gear. The savings are negligible at best.
 
How about when idling in stop/go? As soon as you lift your foot off the break, the car begins to roll forward, though very slowly. Of course, it's probably negligible at the point, but it's all nice to know in the end.

Edit: LOL didn't know it was illegal. Well, like everything is illegal in NJ so there goes that likely.
 
Originally posted by: njdevilsfan87
How about when idling in stop/go? As soon as you lift your foot off the break, the car begins to roll forward, though very slowly. Of course, it's probably negligible at the point, but it's all nice to know in the end.

Edit: LOL didn't know it was illegal. Well, like everything is illegal in NJ so there goes that likely.
Click to expand...

Just to make sure, does you vehicle have an automatic or manual transmission?
 
Let the automatic do its job. If you want to play with the shifter then get something with a manual transmission.

 
Originally posted by: mooseracing
Originally posted by: SearchMaster
you will consume zero gas.
Click to expand...


Not this BS again.



And not to mention alot of states it's illegal to not have control of your vehicle, in which control means putting it in neutral.
Click to expand...

Okay, "zero" may have been an overstatement but the ECU should cut off fuel delivery during engine braking. Is that better?
 
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