Who's the king of the MPG's on here

[jeffmerkur]

OK, who's the king of MPG's on here and how did you get there?

Thanks,

Jeff

[kartracer46]

Talk to Pu241, he is a pretty sharp cookie!

[1990new]

Pretty good record on the last 101 fillups.

OK, who's the king of MPG's on here and how did you get there?

Thanks,

Jeff

I have the last 101 fillups entered and average 45.1 (was about 45.5 in Oct).
I got there by driving 76 mile round trip to work each day.
About 1/2 of that was highway driving and my speed was never over 60 (usually not over 55). Watch way ahead for slowing traffic and take you foot off the gas asap. Always turned off the engine when stopped for a rr or draw bridge, or at any tie up in traffic.
Since I retired Last October and drive mainly around town since, I have seen my mileage begin to decline however.

[TominMO]

1990 Festy 1.3 5-speed

62.5 MPG at 45 MPH on the hwy
58.5 at 55
52.0 at 60

50.0 in the city only, hypermiling

[Pu241]

I concur with everything 1990new has written.

One more thing a grill block can held considerably with helping the engine maintain temp in the winter cold and reduce wind noise inside the car.

And as TominMO data shows, slower is better for MPG.
Which means aero mods are like to improve your MPG more than anything else we can do to the engine.

For what it's worth Darlo, 1990new and myself are pretty much in the same ball park MPG wise.

I recently got over 520 miles out of a single tank.

[neanderpaul]

OK, who's the king of MPG's on here and how did you get there?

Thanks,

Jeff

1990 Festy 1.3 5-speed

62.5 MPG at 45 MPH on the hwy
58.5 at 55
52.0 at 60

50.0 in the city only, hypermiling

TominMO FTW!

53 is a common best around here. keeping it under 55 is your mpg quest's best friend.
I have a lead foot. I've never gotten over 43.

[Mike McKown]

I've gotten a few tanks @55+ mpg, highway. 50-55 mph.

It's no trick getting 50 mpg if you just watch traffic ahead, anticipate stoplights and don't hit redline between gear changes.

That's with a 5 speed EFI. Sorry to say my auto EFI doesn't do any better than about 34 mpg, driven the same way.

[Kraig]

My best tank was 56.7..averaged 50.2 mpg for like 45,000 miles.....worst tank ever was 43....

[1988festivazoom]

or u can go the opposite way like me, redline all day burn tires and wear the engine out in 6,000 miles and get it down to 26 mpg lol

[neanderpaul]

I'm getting 37 in town on my on my 90LX sig festy.

[Pu241]

Kraig, touches on another topic that needs to be considered when determining MPG.
The amount of fuel utilized in the run.
I question if 4 to 5 gallons, or less, is sufficient for it to be considered a "tank" of fuel.
400+ miles is a good run and should give solid numbers.
I know conditions and safety are not alway conducive to being able to run to the limit of the tank. But, I believe you get a more accurate number from a longer distance between fill-ups. Over short distances I can generate very high MPG's but they are not representative of real conditions.
This is not to despair TominMO's test runs, which are valuable data, and were not represented as anything more than demonstrating the potential MPG of these vehicles at various speeds. As well as to serve as a baseline in other experiments.

[neanderpaul]

The fewer gallons of fuel you use to calculate your economy the greater the margin of error. I've been saying this here for a long time.

[freshtiva]

53 MPG was the best Ive ever got and could probably repeat.

[jeffmerkur]

Just picked up the car today. I don't have tags yet so I won't be able to drive it until
Tuesday. I drive 100 miles a day to work and back. Its a mixed bag of highway and stop and go. I'll post up what I get after my first tank. I'm not going to be able to do a tune up until next weekend. So I hope I get a good base line on the MPG's. Then let the mods begin.

[Charlie1717]

Kraig, touches on another topic that needs to be considered when determining MPG.
The amount of fuel utilized in the run.
I question if 4 to 5 gallons, or less, is sufficient for it to be considered a "tank" of fuel.
400+ miles is a good run and should give solid numbers.
I know conditions and safety are not alway conducive to being able to run to the limit of the tank. But, I believe you get a more accurate number from a longer distance between fill-ups. Over short distances I can generate very high MPG's but they are not representative of real conditions.
This is not to despair TominMO's test runs, which are valuable data, and were not represented as anything more than demonstrating the potential MPG of these vehicles at various speeds. As well as to serve as a baseline in other experiments.

I've recently seen the large difference this can play in your calculations.
Here are my results/differences (keep in mind this is in my BP car). I recently deleted a few of my fill ups in my fuelly becuase of this^ So my I don't remember the exact numbers

175 miles= 3.5 Gallons= 50 mpg
I had very strict rules in this to try and keep accurate. I drive the same route fairly frequently. Basically I would stay right at the speed limit and drive straight there and straight back. So from designated gas station to my home then from home back to gas station.

Now I did this trip twice in a weekend.
Here are my actual numbers
315.8 miles 6.850 gallons $3.47 a gallon 46.1 mpg

So that was almost a 5mpg difference and I would say that my second run I was driving even more consistent. I also believe if I was to go up to the 400 mile mark I'd be even averaging a little less. So I'd say realistically I could get 45mpg. Also this was pure interstate and almost completely 55mph. 45 miles at 55mph, 20 miles at 70mph and 10 miles in town.

Also to show the difference between mpg driving and my real driving.
I average 39-40 mpg driving the exact same route but at 78mph and 65mph
and in town driving I get 30-32 mpg. So that has averaged me out to about 37 mpg. Although I rarely update fuelly. I have a full sheet of paper full of fuel ups :p
Soooo yeah. There you go :p

If you want optimum MPG drive slow but consistent. If you can draft behind a semi that will help out also.