MPG high and low scores?

[afeinman]

Ya'll need to try varying your tire pressures. Makes a huge difference.

Any advice for a target? don't really want to be riding around on bicycle tires just to get +0.5mpg...

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[WD Pro]

I’m a U.K. GT with not much commuting and no motorway cruising.

By calculation, I’m in the 13.5 MPG range from new (approx 11.2 US MPG).

WD

 

[jcttraveler]

Burning 3/4 tank of gas through northern AZ I got a hand-calculated 28 mpg. Averaging about 80 mph. (twice. Once last year and again this year.) My usual highway average is 26.

My usual daily driving average is 18.

 

[AZlb5.0]

I drive mine like I stole it so I think between 15-18 on the highway

 

[JetGray_Mach1]

14-15 Combined, about 21-23 if doing only highway driving.

 

[2morrow]

I got about 4 MPG at a track day at Sonoma Raceway. It’s almost 2 laps.

I was pretty happy about that. The guy in the Porsche was not

 

[RagmopInKona]

Sorry ,no data on this, As this is my toy,fun car so I have not bothered to track the mpg.
But I do know my daily get a 17. 5.7v8-AWD .
The Mustang I just fill it when it is thirsty .

 

[PC_GUARD]

Yup, and it can vary wildly depending on all sorts of contributing factors.

The good old "I traveled x miles using y gallons" is still the best/most accurate measure of fuel economy.

Thats how I always do it and my average is usually a decimel off... close enough.

Honestly for accuracy it would be done via lbs of fuel, but gas stations wouldn't be able to scam us as easily lol

 

[Rapid Red]

My MPG calculation formula is a simple one and is always accurate.

Using the fuel gauge, monitor the needle as it goes negative. When it reaches, a defined and predetermined capacity.

A refill is then required, never runs out. It always costs money.

Very similer to eating it you think about it.

 

[Tucker80]

I recalibrated my MPG monitor and have been within 0.2 - 0.3 MPG of actual calculated since. Regardless of how its measured I struggle to get much better than 16.2 - 16.4 mpg in the winter with my 6spd manual. Summer I'm just over 17.1 on average. Definitely beats my V8 4runner which optimistically states 14.2 when it reality it struggles to get 12mpg...

 

[3pdl]

got 11 mgp on the the 1st tank of dealership supplied fuel. 7 at the track. 22 when about town.

 

[KingKona]

Any advice for a target? don't really want to be riding around on bicycle tires just to get +0.5mpg...

I'm only suggesting it as a test, as improper pressures can lead to accelerated tires wear.

Try 30PSI for a week and check MPGs, then try 40PSI for a week and check MPGs.

I remember when I first got my current car. For whatever reason, the tire pressures were set pretty low. And as it was late fall, a month or two later when the temps really dropped, so did my pressures.

Boy, was I getting crappy MPGs. Then I put another 10PSI all around, and I got much better MPGs.

For my money, 38PSI is the sweet spot.

 

[Angrey]

I'm only suggesting it as a test, as improper pressures can lead to accelerated tires wear.

Try 30PSI for a week and check MPGs, then try 40PSI for a week and check MPGs.

I remember when I first got my current car. For whatever reason, the tire pressures were set pretty low. And as it was late fall, a month or two later when the temps really dropped, so did my pressures.

Boy, was I getting crappy MPGs. Then I put another 10PSI all around, and I got much better MPGs.

For my money, 38PSI is the sweet spot.

Setting the pressure to 50 psi will make your tires last twice as long and improve your fuel economy. It'll also be harsher on your kidneys and teeth and harder on your suspension bushings and components and reduce forward grip, lateral grip and increase braking distance under MAX stopping.

If it were me, before I did that, I'd purchase a Verus rear diffuser that is a documented bump of 2+ mpg.

 

[KingKona]

Setting the pressure to 50 psi will make your tires last twice as long....

They'll actually suffer severe tread-wear in the center of the tread.

 

[MidnightStars]

Any advice for a target? don't really want to be riding around on bicycle tires just to get +0.5mpg...

Honestly, 1 psi above OEM is decent enough. No noticeable change to ride quality.
I have 305's now, so I run about 32, 33 psi. I think 30 psi gets them fully contacted with the ground.

Then again, those changes to pressures are minute.

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