New engine MPG

[Kitt]

What I'm trying to state is:
1. Both cars ('05 and '15) have a 11 gallon tank and a 2nz-fe - 1.3l engine.
2. I can drive 435.1km (270 mi) with my '05 and 253.9km (157.7mi) with my '15 yaris.
3. My dealer says it is normal since the engine is in a break-in period, but after that it should give me a better fuel consumption.

That said, is this true?

[nortonfb]

That is a very dramatic difference if you look at the raw numbers.
About 127 miles for 11 gallons that is almost 11.4 miles per gallon.
Doesn't sound correct to me but I'm no engineer.
I would contact Toyota just to see what they say.

[Kitt]

they told me to keep tracking it until the 1000km checkup, and they said that the fuel consumption should improve, which doesn't make sense to me. I've searched the web regarding this and i've found sites that confirm that break-in engines tend to consume more fuel but there are also other sites from other countries were this model is sold and they also complain about the high FC, and their numbers are almost the same than mine. So I guess i'll wait to see what happens

[Bluevitz-rs]

the metric reading is Litres/100km

[Kar98]

Originally Posted by IllusionX

City traffic only, AC on all the time. I'm not surprised by the numbers.

Sent from my A0001 using Tapatalk

I am. Mine is 90% city mileage, often stop and go, then stop, then 90 mph. A/C is on near enough year round. And I'm getting 35 mpg all day long. Manual five speed, 1.5 l, 106 hp.

[Kalispel]

Originally Posted by Kar98

I am. Mine is 90% city mileage, often stop and go, then stop, then 90 mph. A/C is on near enough year round. And I'm getting 35 mpg all day long. Manual five speed, 1.5 l, 106 hp.

Same here. 95% city/town driving, with only occasional hops onto the highway to jump down a few exits. AC has been on every day since I bought the car about 6 weeks ago, in the blazing summer Phoenix, AZ heat. 38 MPG average so far - and that is during my so-called "Break In Period" (my car only has about 1300 total miles on it thus far).

You would have to be stuck in total gridlock for hours daily to get that low of MPG on a Yaris.

[nookandcrannycar]

Originally Posted by Kar98

then stop, then 90 mph.

[Rigaud]

Originally Posted by Kar98

I am. Mine is 90% city mileage, often stop and go, then stop, then 90 mph. A/C is on near enough year round. And I'm getting 35 mpg all day long. Manual five speed, 1.5 l, 106 hp.

Yup........I do 340 - 400 miles on 9.8 US gallons all the time. I average 75mph but I also go way over that speed on every that and red line it.

[IllusionX]

Well, I do avg 28-30mpg, but never with AC on. Stop and go, no traffic. 1.5L manual, brisk driving 2500-3000rpm shiftsm

Sent from my A0001 using Tapatalk

[Kitt]

I've noticed most of you have 1.5l engines. Would that make any difference vs the 1.3?

[NYC-SE]

Originally Posted by Kitt

What I'm trying to state is:
1. Both cars ('05 and '15) have a 11 gallon tank and a 2nz-fe - 1.3l engine.
2. I can drive 435.1km (270 mi) with my '05 and 253.9km (157.7mi) with my '15 yaris.
3. My dealer says it is normal since the engine is in a break-in period, but after that it should give me a better fuel consumption.

That said, is this true?

At first glance BOTH these numbers look low but in fact they really tell us very little. Until we know, EXACTLY, how many gallons of fuel were burned to go those 157 or 270 miles we can not make valid comparisons. Perhaps you're simply filling up the '15 sooner, maybe the gas gauge is not accurate, and you think it is empty when in fact it is half full, etc.

It is true that a new engine will burn a LITTLE more fuel during break-in, but the mileage numbers and range that you are reporting are very, very low. In fact they are so low that I immediately question the accuracy of the data. I am not calling you a liar, I am simply saying that these numbers have not been placed in their proper context. A car that was showing those numbers would almost certainly be displaying other signs of trouble. Yet you say it is performing normally in all other aspects, no check engine light, no rough running, etc. Correct?

The only other thing I can think of that would result in the numbers you are showing without any other performance issues would be if someone was siphoning gas out of your tank.

Do like Toyota suggested, track it over a few months and see. Make sure to use the exact amount of fuel added at the pump in your calculations. Don't guesstimate.

P.S. If anything I would expect the 1.3 engine to be more fuel efficient than the 1.5

[Kar98]

Originally Posted by NYC-SE

P.S. If anything I would expect the 1.3 engine to be more fuel efficient than the 1.5

Dunno about that. My wife has that 1.33 engine in her Scion and it gets a couple mpg less than my Yaris. Her car is smaller, but also has the CVT.

[NYC-SE]

Originally Posted by Kar98

Dunno about that. My wife has that 1.33 engine in her Scion and it gets a couple mpg less than my Yaris. Her car is smaller, but also has the CVT.

I think in the IQ the aerodynamics also come into play. Anyway I have no hard data on FE vis-à-vis 1.5 vs. 1.3, was just my gut feeling. I would think that in the same car the 1.3 would be slightly more efficient than the 1.5, all other things being equal.

[NYC-SE]

Kitt, a quick question...Is there any way to toggle between kilometers and miles on your odometer display? Is there any chance that your odometer is actually displaying MILES?

Looking at the range numbers you quoted 253 is not that far off from 270 IF the 253 number you see displayed is actually miles that you are mistaking for kilometers. Just a thought.

[Kitt]

Originally Posted by NYC-SE

Kitt, a quick question...Is there any way to toggle between kilometers and miles on your odometer display? Is there any chance that your odometer is actually displaying MILES?

Looking at the range numbers you quoted 253 is not that far off from 270 IF the 253 number you see displayed is actually miles that you are mistaking for kilometers. Just a thought.

The car display is in kilometers, I did the conversion so you can have an idea but, the raw numbers out of the odometer show kilometers, I believe there should be a way to make it show miles but it seems like it would involve reprograming of the ECU and/or combination meter.

[Kitt]

Originally Posted by NYC-SE

At first glance BOTH these numbers look low but in fact they really tell us very little. Until we know, EXACTLY, how many gallons of fuel were burned to go those 157 or 270 miles we can not make valid comparisons. Perhaps you're simply filling up the '15 sooner, maybe the gas gauge is not accurate, and you think it is empty when in fact it is half full, etc.

It is true that a new engine will burn a LITTLE more fuel during break-in, but the mileage numbers and range that you are reporting are very, very low. In fact they are so low that I immediately question the accuracy of the data. I am not calling you a liar, I am simply saying that these numbers have not been placed in their proper context. A car that was showing those numbers would almost certainly be displaying other signs of trouble. Yet you say it is performing normally in all other aspects, no check engine light, no rough running, etc. Correct?

The only other thing I can think of that would result in the numbers you are showing without any other performance issues would be if someone was siphoning gas out of your tank.

Do like Toyota suggested, track it over a few months and see. Make sure to use the exact amount of fuel added at the pump in your calculations. Don't guesstimate.

P.S. If anything I would expect the 1.3 engine to be more fuel efficient than the 1.5

ok, so next fill up i will write down the odometer reading and will do the math with the reading on the next fillup and keep you guys posted. I will also write down the reading on the pump and I will do my best to use the same one, so I can get the numbers as accurate as possile.

[Kar98]

Most people just reset trip 1 in the odometer when they fill up, and take note of that number every time they visit the gas station. Drive drive drive, fuel gauge starts to blink, fill up with roughly ten gallons. Divide number of miles in trip 1 display by number of gallons (usually around ten in my case), get mpg.

[Kitt]

and that is exactly what I've been doing, and I am surprised that also the FP on my old Yaris are low but it has always been like this. The only times I get it to show a higher performance is when I drive long distances