MPG

[Stang70Fastback]

My average over the life of the car (36,000 miles) has been 26 MPG. This is based on actual fill-ups (I log EVERY fuel stop), and not the in-dash readout, so it is absolutely accurate.

That 26 MPG average includes every single one of my autocross events, winter rallycross, and general hooning year-round. If you took all of those things out, the average would be higher. On the highway, on warmer days, at 75 MPH the car will easily do over 30 MPG.

[why?]

Any type of driving near the redline will drop mpg like a rock. If you baby the heck out of it and are one of those lucky people that live in a very flat area you can get 34 mpg+.

And sitting in traffic kills gas mileage, etc. MPG has dozens of variables.

[strat61caster]

Originally Posted by Bonburner

i've been averaging 23 for a year or so now .. the first three years I averaged 27.
Not sure what happened but im hoping my 60k spark plug & coil pack replacement maintenance helps it out.

Did you move, change jobs or your schedule?

Seriously, I can pinpoint on my fuel data when I moved closer to work and when my girlfriend moved in with me and I stopped spending so much time cruising on the freeway so my 'average' fuel economy dropped very similar to yours (28-24) but I am filling my car up half as often so I'm saving money.

[Bonburner]

Originally Posted by strat61caster

Did you move, change jobs or your schedule?

Seriously, I can pinpoint on my fuel data when I moved closer to work and when my girlfriend moved in with me and I stopped spending so much time cruising on the freeway so my 'average' fuel economy dropped very similar to yours (28-24) but I am filling my car up half as often so I'm saving money.

I check my MPG each fill and I noticed the change when there was no change in my activities of daily living.
I noticed it after a certain mileage threshold and some body work was done
I'm assuming the major culprit was the bodywork .. but nothing seems off and I've taken the car into a dealer to do a full work up on alignment and everything.
The car's in the shop to get another alignment done at the dealers (somehow Pep boys lost a bolt that's related to the camber ... so in 1 month my driver's front wheel developed huge negative camber causing serious uneven wear - i lost the stock tires because of this ... getting the car back Thursday; hoping Pep boys will refund me and if I'm lucky pay for the alignment as payment for my lost stock rubber lol)

[Mr Nerd]

Originally Posted by why?

Any type of driving near the redline will drop mpg like a rock. If you baby the heck out of it and are one of those lucky people that live in a very flat area you can get 34 mpg+.

And sitting in traffic kills gas mileage, etc. MPG has dozens of variables.

This just flicked on a light bulb in my head.

If I'm not mistaken, the HPFP is mostly utilized in the higher RPM range. So it makes perfect sense that redlining all of the time will sacrifice more fuel than in a typical automobile.

I've pretty much always shifted in the higher RPM range in previous cars because shifting sooner actually caused me to increase throttle demand to accelerate at desired levels. Shifting at higher RPMs decreased throttle demand due to the higher gear ratio.

However, due to the fact that this car is equipped with a HPFP I am convinced that shifting at higher RPMs will significantly reduce your MPGs compared to traditional cars.