Hey all. I'm looking for some confirmation from other RS1.0 owners here mostly, but I just want to make sure my MPG is typical. I've had my xA RS 1.0 for two weeks today, and I've filled it up a few times at this point. So far I haven't broken 30.5 MPG on a tank. The sticker estimates 32 -37 MPG. I understand that the engine may not be fully broken in yet, and that 32-37 is under perfect conditions, however, I'd like to know if I'm the only one with the RS getting this kind of MPG. Can you guys help me out? I'm sure the wheels may have something to do with it in part as well. Dunno that for sure though. Thanks a million! Loving my car!

~~Sel

 

I get pretty much the same mileage with my RS 1.0. I do however have a 45 minute commute every morning through heavy stop and go traffic, which can kill gas mileage.

 

See, I have a 45 minute commute as well, but it's mostly highway. I dunno. Maybe the additions to the RS lower its mileage. That was one reason I bought the xA though. I fancied the close to 40 highway MPG. All of my inquiries about wheels prior to buying suggested that 17" wheels wouldn't effect mileage that much. Certainly not 7 MPG.

~~Sel

 

yeah, that's about what my xA gets; the RS shouldnt be noticably different

by the way, do you play sax, selmer?
I just got a Selmer Action 80 Series 2 and love it!

 

bingo. I'm a Mark VI player myself. I did play a Baritone Super Action in College. Niiiice horn. Love my 6 though.

So you're getting 37ish highway?

~~Sel

 

I've had my RS for about a week, and I'm averaging a good 35mpg. Thats weird, from what I just read in your post... hmm...

 

Ahhh...i'm so jealous! :twisted:
i get about 30 to 32-ish on average, and at most 35 on highway
my motor is just about broken-in, too (850 miles)

 

Hey -- i have RS 1.0 #865, and i'm LOVING it. I, too, have experienced less-than-desired mileage from my RS 1.0 (1st tank i got 30 mpg, 2nd tank 27 mpg)... i'm PRAYING that this is from an engine that is yet to be fully broken in. I have 500+ miles on it and expect that things should start to improve in the near future. Is that a realistc expectation!??! Please?!?!?

The ONLY part of the package i think could drop the mpg would be the tires, but i hardly think 7 - 10 mpg is the cost -- what about Traction control? any efficiency cost there?

... we shall see....

~jonathan

 

i have no idea because i have RS #747 and Ive been experiencing great MPG... 33 1st and 35 just today.....

 

AC would definately make a difference.

Traction control definately not.

 

I haven't been using the AC -- not in this 40 and 50 degree weather... if ANYthing i've been using the heat.

after reading so many of these forums, I've decided to be ABSOLUTELY as conservative of a driver as possible on this tank just to see what I can get: keeping rpms low, giving warm-up time, etc. I really don't think i've been driving it very hard at all... but i suppose it is all relative. Time will tell i guess... its mine now, so i guess i don't have much of a choice!

thanks for everyone's posts -- gotta love the scion community!
~jonathan

 

With so little torque in these things, I think just about anything would effect the mpg.

Windows open/closed
sunroof open/closed

hill or flat land

none stop, never shutting the car off, all highway
or
frequent stops, over a few days requiring shutting the car off and cooling (because fuel used when an engine is cold is different from when warm)

My first tank, 30mpg
second tank, 32mpg (almost non-stop, but some driving with all windows down and about 1/2hr of uphill driving)

 

well, your location isn't listed by your name. ; )

Over here where I'm at, we reciently had a week of 80-90 peak temps.

 

I have a BSP xA and I have minor mods, like the strut bar, exhaust and TRD clutch assembly. I have had the car for six weeks and put 4100 miles, on it. I do a lot of highway driving until last week when I started a second job delivering pizzas.

Before the pizza job, I was getting anywhere from 33-37 MPG, with an average of about 36 MPG. Now with the new job, I got 33 for the first tank and I am getting like 36 again with the second tank. I use 89 octane gas too.

The problem with the RS 1.0 might be that the speedo was not calibrated for the bigger rims when it came out of the factory, not likely, but possible.

 

You know -- it is really interesting that you mentioned this!! I was caravaning back from the dealer w/ my old car last week (my friend, obviously, driving the old car) and she had cruise set steady all the way... and as we were both obeying the speed laws (at that point) and i later confirmed that we were both going the "same" speed, i found it odd that I was leaving her in my *probverbial* dust. I have another 80 mile trip planned for wenesday, at which point i'll be SURE to check the speedo with a timer, etc. I think it would be VERY strange that they would put these out with such a basic error... but who knows?! worth the time to check it out... i'll let you know what i find out.

 

So, i couldn't wait, i had to test it tonight... my buddy was the timer and i held steady @ 60 mph -- according to the mile markers here in western Iowa (which i only assume are correct) -- my scion only counted 0.9 miles on the trip meter for every marked mile along the road, and the mile took a few seconds under a minute to complete.

SOOOOO -- i'm assuming that there is in fact something askew between wheel size and the speedo/odo... my dealer is going to check it out on wednesday...

good luck!!

 

Ok... this is probably going to be my final post on this subject... so here it goes.

My tests have provided the following results:

The larger RS wheels account for a 3.5% difference between ODO miles and mile markers along the road (this number was consistent over the 1, 10, 50, and 80 miles over which i tested) -- which means your ODO will be 3.5 miles short for every 100 miles you drive (1,000 will be 35 miles, 10,000 will be 350 off, etc...) and so likewise (i assume) that my speed will be off by 3.5%.

Because this doesn't really account for the mileage i've been getting (max under conservative driving = 32 mpg), i decided that wheel size really wasn't the issue. Last night at a bar, a friend of mine was complaining that, after she had it in for maintenence at the dealer, her Prius was only getting 35 mpg down from her standard of 50 mpg... only to discover that the dealer had dropped the PSI in her tires down to 30 (even though max psi is 50 and her normal is 46).

... the RS tires are max 50 psi... and mine have been inflated (deflated?) to 30 since the day i drove it home. I assume that the width of the tire PLUS the lower psi could really drop the mpg. This is my last attempt. Tonight i filled my tank, and bumped up the psi. If this doesn't help, i'm going to accept the fact that I have an underachiever for a car.

If anyone has any input, i'd appreciate it. Those of you w/ an RS 1.0 xA who *actually* gets more than 32 mpg with standard driving habits, i'd love to hear from you... what you may have done to get there.

regardless... i love my xA!!!!
~jonathan

 

Hey, VERY NICE CATCH!

Man, I think you found it!

I took a look at my tires about a week ago and had trouble finding the recommend tire pressure. I think it really was 30psi, although I think I did see the max at 50psi. Usually low profile tires like this run at a higher psi and I was suprised to see the recommend at 30psi..

If you've ever riden a bicycle that's been 10psi low, you'd know that it takes more effort to peddle the bike, plus the bike doesn't role as far with each peddle either.

My tank is almost empty right now, so I'm going to increase my pressure too and see the difference!

 

Filled up today. 28mpg

so from when I bought the car, 30mpg, 32mpg, 28mpg.

Checked the tire pressures, all at 30psi. Doublechecked the tires and didn't see anything indicating that they should be at 30psi. Uped them to 50psi. We'll see how it turns out.

 

Ok, here's what I've done so far. I was consitently getting about 30.2 or 30.4 MPG. Last tank I decided halfway through to start driving more conservatively. (Corners easier, and backing off about 5 MMH)

Tank hit 32.4

This time I've done the same with the full tank. I get to fill 'er up tomorrow and I'll let you know the result. Also, I can't wait to hear about the PSI. Maybe we can work this out.

~~Sel