What's everyone getting milage wise??

[DC-T4R]

2000 V-6, Auto, 120K miles

I've been getting around 15/16 (mostly city, some highway) since I switched to 265/75 R16 Goodyear Duratracs. Even compensating for the difference in tire sizes, I didn't think I would see this big of an impact.

Used to get at least 18 on previous 265/70 R16's.

Curious if others saw a similar drop in MPG when moving to 265/75 R16 Goodyear Duratracs? Or perhaps time for me to check MAF, o2, etc, etc.

 

[00_4runner]

2000 Sr5 Sport 4WD 96XXX I get like 17.5 mpg ALL city. This was after my bilstein install and a rotation and balance. Hopefully after fluids, plugs etc Ill be able to hit 19 in the city.

 

[Volley]

Just filled up today, I got 20.17MPG. I'm stock except for the 265/75/16s. Mileage calculated via gps. That was probably 80-85% highway

 

[Barak]

5 speed manual

Just filled up today, I got 20.17MPG. I'm stock except for the 265/75/16s. Mileage calculated via gps. That was probably 80-85% highway

Stock 96 SR5 5 spd manual 170K 265/70/16 - pretty gentle on acceleration

Best - 26 MPG (tail wind, light truck)
Worst - 16 MPG (head wind, towing, heavy truck)
Average highway @75-80 MPH - 22-23 MPG consistent
Average mix city/highway (40/60) - 19-20 MPG consistent

Thinking of going with 265/75/16 next time but don't know how this will affect my great overall MPG.
Any thoughts?

 

[mory]

I've said it before in other threads but it's worth saying again:

You have to calibrate your odometer before you can calculate your true MPG.

Most odometers/speedos are off by a little but but adding bigger tires increases the error.

Think about it: Your odometer doesn't "know" how many miles you're going, it only knows how many times your driveshaft is turning. If you have bigger tires you will go further with fewer revolutions of the driveshaft, so the odometer will "think" you've only gone, say, 100 miles, but you've actually gone 105.

Best way to calibrate, IMO, is with a GPS. Most GPS units have a tripmeter on them. Set the GPS tripmeter to zero, then set the 4runner's factory tripmeter to zero. Drive around (the longer the better.) When it's done you will know how much of an error your odometer has.

Then, when you fill the tank and calculate mileage, you will have to multiply the miles by the conversion factor. Say your conversion factor is .032 (that is, it underreports miles driven by 3.2%). So when you fill the tank, you take the number of miles shown and multiply it by 1.032 to get actual miles driven. Divide that number by the number of gallons put in and you will have the true mileage.

As for my 4runner, I started using a web site called Fuelly.com to record my MPG. So far it has been consistently around 18 - 19 mpg average, which is right where it should be. I've gotten as high as 22 on long stretches of straight, flat road.

My Fuelly.com "badge" is below, showing my MPG:



and this is my DD Mazda's badge:



Which explains why I drive the Mazda whenever I can!

I never use GPS, I have 98 4runner sr5 4x4 stock 4.10 gear with 305-65-17 tires and 2.5'' lift and getting 16-17 mpg city and 20-21 mpg highway last week 65-70mph highway with 130 mile and is click 5.5 gallon and that is 23mpg, i have to fill up the gas full tank cuz we going to off road. I think i can hit 300 mile if is straight highway run. and all my engine oil and gear oil is all synthetic.

 

[brian_d]

just recently got my runner and drove it to San Francisco from Encinitas, Ca and went about 324 miles before the 1st fill up (15.7gal), averaged 21mi/gal.
Its my DD with a mix of city and highway and I average about 18mi/gal now.
The only mod I've done so far is a AEM intake (I'll add that I got about 1gal/mi after the install of the intake).
Its not as good as my camry was but then again my camry isn't nearly as AWESOME as the runner!

 

[CobraSpdRH]

Just took a trip from Tampa to Jacksonville and back, including some driving in Jax, averaged 22.67 mpg. Interstate speed was 65-75. Typical commute driving (18 miles each way, mostly highway) nets me about 21 mpg, which I am definitely happy with. Remember, I am a 2WD, so your mileage may vary

 

[JayRolla]

Just took a trip from Tampa to Jacksonville and back, including some driving in Jax, averaged 22.67 mpg. Interstate speed was 65-75. Typical commute driving (18 miles each way, mostly highway) nets me about 21 mpg, which I am definitely happy with. Remember, I am a 2WD, so your mileage may vary

Thats very good. I dont see how people get so much better gas mileage than what is actually rated from the dealer. Maybe someone's not doing the math right or properly logging.

I just took a trip 1700 miles and I averaged 17.2 MPG the entire trip. Lots of mountain climbing and downshifting. Average highway speeds where 75-80MPH which I could have gotten better gas mileage if I drove 65-75.

 

[Qyota]

Average highway speeds where 75-80MPH which I could have gotten better gas mileage if I drove 65-75.

Absolutely. Things get pretty inefficient above 65. That's where I keep it.

I consistently get above 20 on mixed driving in the summer. Usually 22 on longer highway trips. 3.4L, 265/70, yada yada yada.

 

[kman55]

I get about 18.3 combined, I've got stock everything 2.7 I-4. I do about 70% city 30 highway.

 

[xskydivingdudex]

I do alot of driving on noth highway and city (maybe 50/50) and with 285/75s and all the armor and extra added weight i have im was getting 16-17mpg til my 02 sensor went bad so now im getting 15-16mpg.

 

[Nunyabiz]

I am still not even getting 12mpg in 100% city driving.

I am going to change spark plugs & wires soon and probably change the MAF and see of that helps.

 

[Rc4r]

Im a teen and drive like one.
15-16 stock 11-12 lift and tires

 

[the great him]

so i feel so dumb right now... for who knows how long, probably months, i have been driving around and getting bad mileage, only occasionally hitting 250 a tank. and yesterday i was sitting in the shop bored of my a$$ and i looked over and saw an air chuck sitting there, so i thought eh, lets go out and see what PSI my tires are at, so i grab my gauge and head out to my truck with air hose and chuck in hand... 20-22psi all the way around apparently last time i went wheeling i never aired all the way back up:bash::rockthrow::whipping2:ybrick: anyhow i pumped up my tires to 40 all the way around(the tire says 65 but i know my 4runner doesnt need that much) and i can already see a noticable difference. hopefully this will mean i will be getting close to 300-320 a tank. i also noticed that my trans temp gauges is reading lower now...

 

[20yota4runner]

19.5 mixed. We have the ethanol blend here too.

 

[Nunyabiz]

Well on my last tank I got 12.84mpg, using 87 octane up to 10% ethanol fuel.
Tank before that doing about the same route with the same city/hwy mix (about 35% hwy) I got 12.33.
This is without doing any tire size conversion which I think is about 4.7% but I am not sure.
Tire size is 255/75R17 which are just over 32"

Does than mean I am getting around 13.4mpg?

Either way the reason I got better mileage on this tank was I turned the ECT power button ON and got .5 better mileage and that was not even remotely trying to baby it around, I just drove it like I meant it and even the 35% hwy miles were mostly between 70-80mph.

All my other tanks were with ECT OFF and driving like a grandmaw and got worse mileage.

Still way too low, but better at least.

I am getting an Ultra Gauge in about 2-3 weeks (out of stock on back order) hopefully that give me a more concise mpg calculation and help me save some mpg's.
BTW anyone that is looking for an Ultra Gauge they have them for $55 now, giving an extra $5 off because of back order.