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04-27-2018, 02:38 AM | #1 |
Drives: 07 Yaris Liftback Join Date: Nov 2010
Location: Bay Area
Posts: 147
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07 Yaris Hatch - Bad MPG?
So having owned the Yaris for about 8 years, my best tank was from a 400+ mile trip from San Francisco to Los Angeles where I achieved 45mpg. I made another post about it, believing it might have been from claying my car but I also drafted behind large trucks for 80% of the trip. This was right after I changed the Air Fuel (Precat oxygen) Sensor, plugs, pcv, all fluids, and pumped tires to 45psi. I even made a front grill block for the trip that I forgot to mention in that post.
However, I used to get 34 mpg with 80% highway driving and 20% city, 12 miles each way per day. I then started getting 28-30mpg driving about 30% freeway and 70% city, 6 miles each way everyday. In both scenarios, I rarely get stuck in traffic and I'm shifting before 2k rpm. I implement every hypermiling technique I can think of other than engine off coasting. I usually downshift as I come to a stop without touching the gas pedal which should cut off the fuel for that duration of time while at the same time slowing me down before applying the brakes. I drive slowly up hills and gain speed going down hills to conserve fuel. It seems that no matter what I try, I can't even get close to other members numbers in the 40-60mpg range. I also have a 96 miata that I drive like a bat out of hell. It gets mid to high 20s with zero hypermiling techniques on the same exact commute. The only mod it has are the lowered suspension where it's about 1-2" off the ground. I also fill it up with Costco gasoline. At this rate, I'm really disappointed with mpg of my Yaris since everyone on this forum seems to be getting 40+ mpg and it doesn't sound like they're taking on extreme hypermiling techniques which I used to get to 45mpg. Really don't know what else could be wrong other than the Costco gasoline I've been using. |
04-27-2018, 07:21 AM | #2 |
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,762
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Do not propagate this myth. Far from everyone is achieving 40+.
The efficiency of this engine is very sensitive to environmental and situational conditions. My worst reported f/e is half my best. Predominately highway is 25% better than predominately city. Same for cold vs warm. I've never had a car which has such radical swings in economy. I can look at my logs and easily spot when it was cold, or predominately highway, or my wife was driving... It could well be your change in road type utilization has hit you. Sent from my Elite_5_5_Octa using Tapatalk
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04-27-2018, 07:24 AM | #3 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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all that downshifting to stops is just beating up the synchro's
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04-27-2018, 10:01 AM | #4 | |
Drives: 07 Yaris Liftback Join Date: Nov 2010
Location: Bay Area
Posts: 147
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Quote:
Hmm, first time I've heard that. I've just been trying to implement DFCO as stated in the pinned thread to squeeze every mpg out of the Yaris I can. I'm still on the original pads and rotors at 110k miles. (knock on wood) |
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04-27-2018, 10:45 AM | #5 |
Yeah, I don't get 40-60. In all my time on the forum, I think 50 was the holy grail number. The highest consistent numbers I recall seeing were from hyper-milers and they were getting around 42-46.
I don't hyper-mile at all. To the contrary, I like to get where I'm going. I usually see between 30-33 mpg. |
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04-27-2018, 11:19 AM | #6 |
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,762
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My worst: 24.24 mpg Dec 31, 2017
My best: 46.51 mpg June 26, 2014 Lifetime average: 31.33 mpg For its size and engine displacement, the Yaris has never been considered stellar in the economy bracket. In my first years of ownership the vast majority of people were very surprised at what real world numbers proved to be vs what they perceived it should achieve.
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04-27-2018, 01:09 PM | #7 | |
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04-27-2018, 01:42 PM | #8 | ||
Drives: 07 Yaris Liftback Join Date: Nov 2010
Location: Bay Area
Posts: 147
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Quote:
Quote:
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04-27-2018, 03:42 PM | #9 |
Drives: 2018 Yaris Hatchback SE Join Date: May 2014
Location: Guelph, ON
Posts: 26
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I typically got 36 mpg in the winter and 39.25-40.5 mpg in the summer with my 07 Hatchback. I’d say I’m not an overly aggressive driver.
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04-29-2018, 12:29 AM | #10 |
Drives: 07 Yaris Liftback Join Date: Nov 2010
Location: Bay Area
Posts: 147
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That's pretty good. How many miles each way is your commute and how much highway driving vs city driving? I'm thinking people who drive farther distances on their daily commute would be able to achieve these higher numbers.
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04-29-2018, 12:46 AM | #11 |
Drives: 2015 Yaris L Join Date: Jun 2017
Location: Illinois
Posts: 94
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The newer Yaris have real time mpg meters in the dash lcd. The sweet spot for these engines seems to be 45 to 50 mph. With a tail wind at 45 on flat ground I can hold 50 MPG plus pretty easy. Where I get hit is in the lower gears thru town or at 80 mph. Lower gears 14 or 15 mpg. 80 mph upper 20's to lower 30's mpg.
It all averages out. |
04-29-2018, 01:08 AM | #12 | |
Drives: 2018 Yaris Hatchback SE Join Date: May 2014
Location: Guelph, ON
Posts: 26
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Quote:
The other two were 20 km drives each way with most of each commute bring on highway. It isn’t a true highway as it has 70-80 km/h speed limits and 4-5 stop lights on it. Less of a chance to let off the accelerator for better fuel economy. |
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04-30-2018, 03:01 PM | #13 | ||
Drives: 07 Yaris Liftback Join Date: Nov 2010
Location: Bay Area
Posts: 147
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Quote:
Quote:
PS: I just realized what the other guy meant when he said it's bad for my synchros when I downshift so much. I didn't make it clear that I drive a 5-speed manual transmission Yaris. I'd understand that downshifting with an automatic would play hell on the transmission and it probably wouldn't last 50k miles. The best part of driving manual is being able to take hypermiling to extreme measures as well as an extremely reliable transmission compared to autos. |
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04-30-2018, 03:30 PM | #14 | |
Drives: 2015 Yaris L Join Date: Jun 2017
Location: Illinois
Posts: 94
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Quote:
No, I keep my tires at 32 or 33 psi. I'm not a hyper mileage guy, my Yaris gets plenty good enough. Especially compared to my last vehicle, a Ford Ranger. Though I would like to get my average up, I think the lower mpg is due to winter blend fuel + colder temps combined with a lot of lower gear driving with the 4 speed auto. Plus, during spring, summer and fall, I always have a bike rack attached to my hitch, empty or loaded. Not much I can do about those factors. Last edited by scylla; 04-30-2018 at 03:44 PM. |
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04-30-2018, 05:08 PM | #15 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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automatics don't have synchros
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05-02-2018, 01:35 AM | #16 | |
Drives: 07 Yaris Liftback Join Date: Nov 2010
Location: Bay Area
Posts: 147
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Quote:
Ahh sorry, I don't know too much about transmissions. Just that it's not good running through the gears with an auto. |
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05-02-2018, 07:45 AM | #17 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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Read all the posts here on members trying to solve worn synchros by switching transmission oil types.
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05-02-2018, 07:55 AM | #18 | |
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,762
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Quote:
Sent from my Elite_5_5_Octa using Tapatalk
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