Good idea:

Model Year: 2005
Transmission type: STD
Rims: 18"
Engine Mods: NONE
Transmission Mods: NONE
Suspension Mods: NONE
Avg Speed: 65-70 sometimes 75 passing
AVG MPG: 28 so far

 

Sorry to interject - but how big exactly is the gas tank? 10gal? 11gal? When does the fuel light come on for y'all? I pick up my RS 2.0 in 6 days and counting!

 

At fill-ups of my xB I can tell how, uh, "spirited" my driving has been more than anything else.

That I can drive the heck out of the xB and still get decent milage is a plus, and when I really want to, I can drive in a nice, sane, boring manner and get even better milage.

General, overall milage I get hovers just short of 30... That's fine.

Oh! McFly, the tank is 11.9 gallons and the light should come on at about 2 gallons remaining...

 

I get 33 MPG consistently...

 

eggie, your 18's while being made of aluminum are going to be heavier than the stock 15 inch steel wheel. Stock steel wheels are claimed to be 17.5 lbs and your 18's are bound to be over 20lbs each.

Tire weight goes up as well...stock goodyear 185\60\15 is only 16lbs....your 18's are probably more like 21lbs.

So, your probably a good solid 8 pounds heavier per wheel/tire over stock which will hurt you on excell. Once your rolling at speed the next thing thats hitting your MPG is going to be the tire width and compound....performance tires are soft. Skinny hard tire roll easier than wide soft tires. HTH

Garry

 

Oh... That suks... Guess that will be the price I pay for nice wheel.

 

I have a RS 2.0, my first tank was 28.57 mpg. The best I have gotten is 35.27 mpg. I consistantly get 33 to 34 mpg. I reciently took a trip to Valdosta, Ga. and driving 70 to 75 with the air on half the time, I got 33 mpg. On the way back running 75 to 80 with the air on full time, I averaged 32 mpg. My only mod is American Racing 15" wheels and a K&N filter in the stock air box. It can get quite hilly in Tennessee, so I am very pleased with my mileage.

 

Hi,

Try some measurements of the 18's with your rubber on them...if they are shorter than the stockers, your engine revs will be higher leading to lower MPGs and misleading MPH on speedo (300 Miles on odometer will actually be like 280 miles or less maybe even)

My maximum MPG seems to be a steady 3000 RPM ( or less if I never wanna get anyplace). I am averaging about 30 MPG on my first 3 tanks (preowned xB 5 spd with 13K miles).


Dave

 

I have about 3700 miles on the RS2. Break-in seems to have made no difference. I get between 31-34 mpg depending on how many jack rabbit starts I do...hardly ever drive over 70 on freeway...

 

I have over 13,000 and my mileage seems to be climbing....

 

its pretty close...wuts that like 29.99999 MPG?

 

i usually get around 31 or 32 mpg out of mine. but the only mods. i have are the 15" alloy wheels and a cool air intake. and i drive about 60% hwy and 40% city. but when im on the hwy i drive at 75mph or greater. needless to say i have a lot of speeding tickets.

 

This is from as previously posted: http://www.miata.net/garage/tirecalc.html
Stock tire: 185/60-15
Sidewall: 4.4
Radius: 11.9
Diameter: 23.7
Circumf: 74.6
Rev/Mi: 850.0

New tire: 215/35-18
Sidewall: 3.0
Radius: 12.0
Diameter: 23.9
Circumf: 75.2
Rev/Mi: 843.0

Only thing I can guess is weight as someone stated earlier. Most people that are getting 31+ have the 15" wheels

 

In the first tankfull I have run the car in ways meant to destroy the gasoline milage (but speed break-in) of an RS2 with automatic.

-lock in second gear. fast accel. coast down, accel, coast down....lock out fourth gear.. fast starts (rarely full throttle) fast breaking (because it's fun) Looking in general for as much stop and go wastage as possible

255 miles divided by 10.4 gallons to fill would make: 24.5 mpg.

In other words, I -know- I can get thirty plus when/if i drive this car more sedately and let it choose its gearshifts.


no complaints from me, not yet.

 

Hey guys I too had concerns regarding the MPG, because I have owned mine for a year now and get nowhere near the 300 mile mark. So I went straight to a local dealer to get answers ... Here is what I learned. First, our boxes will take 11 gallons of fuel, I did it recently, without overspill. So doing moron math, 300 miles with 11 gallons = 27-28, by far the best I have ever gotten out of the car and a far cry from the 31-34. (At 34 mileage would equal 374 miles)
Here is what I learned the 31-34 it determined by suspending the car off the ground or on rollers, being run at 32mph until dry in 5th gear. Because of tightening EPA restrictions, instead of making a more fuel efficient cat they can simulate efficiency by driving slower. Now no one in their right mind drives like this but it is how it was determined.
Feeling slighted, I am wondering what kind of recourse we have as consumers, because we haven't been lied to, but extremely misinformed. The way to get that kind of mileage is not a practical way to drive.

So any Scion lawyers out there want to start a class action lawsuit ?

 

The REAL point of the EPA fuel milage numbers is to run all vehicles through exactly the same test routine so that direct comparisons can be made vehicle to vehicle.

There is really no expectation that driving in the real world by real drivers will result in the exact same milage, but that if vehicle A is 5% more efficient than vehicle B that one could expect to see that difference between the two.

The actual MPG one gets will depend so much on driving habits, driving style, load, and environment, that the EPA figures are only a rough estimate.

If one drives in exactly the same manner and over the exact same simulated terrain, one might expect to see the same numbers. If one changes ANY of those, all bets are off.

For myself my last vehicle was 'EPA Estimated' to get around 26/35 and in real life [tm] I saw 21/32. Those figures reflect my driving style and the areas I commonly drive in.

Looking at the figures for the xB and adjusting them for the known discrepancies between MY driving style and environment and the EPA COMPUTER'S driving style and environment, I know what I should expect from my xB. My xB actually does just a bit better than expected.

(I can compare MY MPG to EPA MPG for my last several cars, and the difference has been fairly constant, with the city MPG showing the most difference between vehicles. This seems to be related to the fact that some of them lent themselves to more, uh, "spirited" driving than others...)

So, use the EPA estimates to compare between vehicles, but modify the EPA estimates by the expected differences between the driving style of the EPA computer and yourself.

(And one's environment - around here just driving from my apartment to the gas station I go through several quite noticible changes in elevation - probably several hundred feet, cumulatively. This is a larger change in elevation just to the gas station than one can expect in some entire states... It makes a difference in milage.)

So just remember, the EPA isn't saying "Your new car will get this milage." They are saying "Here's how these two cars compare."

 

I don't really care what method they use to measure MPGs... because the MPGs I've been getting since purchasing my xB is within the range advertised.... lowest MPG is 31, highest has been 35. I think that if I worked at it, I could get 37.

And unfortunately, as is typical with people who post about sub-30 MPGs, you failed to provide information that might help determine the cause.

 

I just purchased my xB about 3 weeks ago. The first tank of gas was supplied by the dealership. I went 290 miles on it and decided to fill up at a 1/4 tank. It took about 9.2 gallons. I am still on the second tank of gas. The light just came on and I have only gone 211 miles. I am freaking out! What a difference. My driving has not changed. I go the same route. I drive like an old man. The only thing different is the gas. I used 76 gas. Not the cheap stuff. I was stoked with 290 miles with the first tank. Not thrilled with 211 miles. My V-8 Camaro went 220 on a tank. Should I be concerned?

 

What grade did you put in? I was told if you put in say 91 it would burn faster or something like that...

 

Well, that isn't really a good way to determine gas consumption.
I use: mileage driven / gallons pumped = MPG (ex: 250(driven) / 10(pumped) = 25)

The tank is or reads to be 11.9 gallon capacity. My light comes on with about 2.5 gallons left.