Just payed $54 to fill up the tank after commuting all week...

decided to drive like a grandpa and see if it worked...






Success!!!!!!!!!!

 

I wish i could get 32.6 mpg. You must drive all on the fwy.

 

wow!!! i only get 25 with my car
ahahaha, you probably shift pretty early lol

 

probably coasted down a hill with the clutch in and took a picture like a little b!tch.

 

32+ MPG at an average of 36 MPH. Sounds like a lot of 40-55 MPH in 6th gear.

(The best I've ever seen on the flat is 36.8 in 6th gear at 55 MPH).

 

This is a common misconception. By shifting early you are not using the car's power band and therefore may be burning more fuel than you need to in order to accelerate to cruising speed.

"Fuel efficiency varies with the vehicle, but generally acceleration is most efficient at 75% to 100% throttle openings.[16] Fuel efficiency during acceleration generally improves as RPM increase until peak torque."

This is as well. Coasting in neutral or with the clutch in actually burns *more* fuel than coasting and leaving it in any gear.


"When coasting with the engine running and manual transmission in neutral, or clutch depressed, there will still be some fuel consumption due to the engine needing to maintain idle speed. While coasting with the engine running and the transmission in gear, most cars' engine control unit with fuel injection will cut off fuel supply, and the engine will continue running, being driven by the wheels."


http://en.wikipedia.org/wiki/Fuel_ec...zing_behaviors

 

Both of those are interesting points...

 

Honestly..I just accelerated slow as hell and didn't pass 3k rpms..no one was on the road lol

 

prius gets like 50+mpg

 

Yea, but he had a better one ^^

/thread ?

lol

No doubt the Z is a really nice car with decent fuel economy, but nowhere near a Prius.

 

never talk crap bout prius my friendh ad to rent 1 when his m3 got wrecked and we said it sucked but his tank went 723 miles before having to be filled..

thats nuts.. mine is like 285 lol miles

 

I wouldnt put too much trust in that gauge either

 

^+1

 

Aren't most people in Miami just a bunch of old farts anyway? When I've been there, traffic was usually bad.

 

So if I'm going down a steep hill. You're saying with it in gear and the engine running at 3k rpm is more fuel efficient than putting the clutch in and coasting down at ~1k rpm?

 

^yes, because the wheels spin the motor. throw an a/f gauge on there and watch it peg to full lean when you coast in gear which means no fuel is being used.

If you really want to see great mpgs on that gauge just swap in some 1000cc injectors and tune a piggyback/standalone.

 

You can pretty much trick that gauge into about any number you want over a short period. And at that average speed, you obviously were not traveling in the city. Don't think anyone is gong to get anything close to that on an entire tank, even on the highway, cruise set to 55

 

did you actually calc it out or only relying on the computer data? I have had my Z long enough to know that computer isn't even close to true MPG

 

I know...it'd like to believe it is though lol..

 

For the last 2-3 months, I was only taking my Z a mile back and forth to the train station (yes i should have walked), and would let her warm up for a good 5 minutes or so before leaving.

Between never getting out of 3rd gear and my heavy foot, I just looked at the MPG computer.

8.2mpg.

Awesome.