my official mpg test.

[ghosthunter242]

as a former hypermiler, i broke some rules for the test, so my results can not be iron clad as i did not use the same pump at the same station nor did i stay at a consistant speed. that said, when i filled it up and travelled the 7 or so miles home then gave the car a break until it was time for the drive. it took about 2 miles to get on the freeway and at 9 miles i started freeway speeds from drafting a big rig at 55 to passing people at 80+ and cruising at 70. the mph was all over the place. i put a total of 64 miles on the tank by the time i got to the gas station nearest my home.
when i filled it up(i had not topped off at the other station) the auto stop of the pump stopped at 1.2 gallons (53.3mpg?!)
i then topped it off at 1.5 gallons for a more realistic 42.66 mpg.

is the 53.3 mpg realistic in a basically stock 91 festiva 5 spd? 12" wheels. the only non stock thing i can think of would be the harley davidson muffler.
what do you think? what was your average and best?
thanks
mark

[lessersivad]

I don't keep close track of MPGs but on a 728 mile round trip I did just out of curiosity.

Going on the freeway, right lane only doing 50-55 MPH, the first 364 miles I got 50.27 MPG.

Return trip, same route going 55-60 I recorded 45.5 MPG.

I was keeping track on a semi-regular basis and for overall driving it was coming in at 38-42 MPG.

Vehicle; 1993 Festiva L, 5 speed. P155-80/R13 tires. Muffler delete pipe.

[Damkid]

i haven't checked what mileage i get in my festiva but the last tank i only got roughly 200 KMS, but i was pretty hard on the car the whole time so i'm not tooo surprised :lol:

[BEASTS'TIVA]

mpg

i haven't checked what mileage i get in my festiva but the last tank i only got roughly 200 KMS, but i was pretty hard on the car the whole time so i'm not tooo surprised :lol:

i will do a mpg test from vancouver british columbia to san diego california, roughly 1400 miles.

[fastivaB6TG25MR]

i get around 27mpg with my b6t/g25mr and my driving seeing triple digits 2-3 times a day(mph) and with a bov

[zoe60]

My '89 LX does better in town than on the xway. 39 in the city, but if I cruise at 75 or 80 it goes down to about 34. It's still a 1.3 with the original carb.

[neanderpaul]

53 is a consistent best number delivered by driving very conservatively. Many members here report that exact number by driving 50-55.

[bhazard]

I also managed 53 once on a highway trip across lower michigan maxing out at 60 mph. I was drafting trucks religiously.

I bet our cars could benefit greatly on the highway from aerodynamic mods and taller gearing.

That was when I was B3 by the way, best so far with the B6T is 39.5...

[TominMO]

53 is a nice number. With a B3 I've gotten 62.5, but with driving at a consistent 45 MPH on the hwy--not recommended! At 55 I got 58.5, and at 60 I got 51.5 IIRC. So 55 seems like a semi-practical sweet spot for constant speed.

For some reason, MPG seems to go down when you put a turboed B6 in place of the stock motor.

[Evil D]

Geez and i thought i was doing good at 32.

[Roboskittle]

In my old white Festy I was netting in the 50s. I had a fully stripped out interior no bumpers to speak of and had 2 inch exhaust from the cat back.

[Evil D]

We are talking about strictly highway miles right? I just don't see myself ever getting mileage like that unless it was on a cross country trip.

[Oren09]

I did two experiments. I drove to Spokane twice this month- about 160 miles from home.
The first one I stayed above 70 (unless an Idaho driver was going the speed limit of 60...) but below 85. I got my highest ever mileage at 43.4.
A couple of weeks later I did the same drive at 60-70MPH and got 44.6MPG.

I generally go about 65-75MPH on highways around here (Montana=70, Idaho=60). To me, 40MPG is excellent. Much better than my truck's high of 16MPG.
However, on my next trip to Texas, I'm taking the car this time. If I can pull off 50MPG, that might add up to quite a fuel savings over 2000 miles. I wanna try a trip at 70 and another at 55...

I've also been experimenting with Premium gas. I know the higher octane won't really help the fuel mileage, but at the Exxon station here, the Premium doesn't contain ethanol. I seem to have gained a bit of mileage, but nothing significant. I'm about to switch back to regular (10% ethanol) and see if the mileage drops.

Gas logs: http://www.fuelly.com/driver/oren09/festiva

[festiva351w]

yrs ago my gf had a 88 4 speed it got around 44 mpg around home, up and down hills, i later bought a 91 5 speed EFI and it got about the same mileage, i just bought a 88 carb, 4 speed, with 141,000 miles for 200 bucks that runs, from a friend that had it on the road last fall, i'd like to do some experiments with it for gas mileage, if my insurane co.will let me insure it

[TominMO]

If you're using premium you might as well bump up the timing; might get better mileage that way too.