Fuel Economy

[swng]

Originally Posted by Silver Streak S

My Yaris has 715 miles on it. I just fueled up today for the 2nd time. I calculated my fuel mileage to be 40.33 mpg around town (no highway driving at all). I drive 21 miles each way to work with avg. speed probably around 45 mph. I have approx 15 stops for traffic lights. I'm not hypermiling but I try to be conservative (no jackrabbit starts, etc.). I'm very pleased so far. Will my fuel mileage increase as my engine gets broken in?

Good numbers!
Hopefully, you will get even better numbers as your car breaks in.
Although you are not hypermiling, you are paying attention not to waste fuel unnecessarily, if this is what you meant in your post. I think that is the main reason why you get reasonably good numbers. As I have been saying, anybody paying attention to F.E and fuel saving techniques will benefit to a degree.
Also, although you said you did not drive on highways, you did say that your average speed was around 45 mph, which I consider faster than the usual speeds we use in city traffic. So, it appears that you have not always been bothered by busy traffic. Also, you said that you drove about 21 miles each way to work, which should be considered a long but quite smooth, albeit non-highway trip. Although you mentioned that there were about 15 traffic light stops each way, you could have been using anticipatory techniques to avoid some traffic light stops some of the time, consciously or otherwise. I think all these contribute to the fact that your Yaris has returned more or less highway fuel economy.
Short trips and bumper to bumper traffic are very damaging to F.E.
I recommend this site to you. It is very practical:http://www.vehicleservice.co.za/calc/fuel.html. Unfortunately it appears that it uses Imperial gallons in its fuel calculator. However, the fuel saving tips in there are good. If you use them, you will not have to rely solely on the car's breaking in to bring you even better F.E.
Warm regards and safe and happy motoring!

[Silver Streak S]

Originally Posted by swng

Good numbers!
Hopefully, you will get even better numbers as your car breaks in.
Although you are not hypermiling, you are paying attention not to waste fuel unnecessarily, if this is what you meant in your post. I think that is the main reason why you get reasonably good numbers. As I have been saying, anybody paying attention to F.E and fuel saving techniques will benefit to a degree.
Also, although you said you did not drive on highways, you did say that your average speed was around 45 mph, which I consider faster than the usual speeds we use in city traffic. So, it appears that you have not always been bothered by busy traffic. Also, you said that you drove about 21 miles each way to work, which should be considered a long but quite smooth, albeit non-highway trip. Although you mentioned that there were about 15 traffic light stops each way, you could have been using anticipatory techniques to avoid some traffic light stops some of the time, consciously or otherwise. I think all these contribute to the fact that your Yaris has returned more or less highway fuel economy.
Short trips and bumper to bumper traffic are very damaging to F.E.
I recommend this site to you. It is very practical:http://www.vehicleservice.co.za/calc/fuel.html. Unfortunately it appears that it uses Imperial gallons in its fuel calculator. However, the fuel saving tips in there are good. If you use them, you will not have to rely solely on the car's breaking in to bring you even better F.E.
Warm regards and safe and happy motoring!

Swng,

Thanks for the feedback and the link to that web site. I kinda felt like I was more towards highway mileage based on my daily driving conditions. You confirmed my suspicion

[voodoo22]

Unfortunately the Yaris I purchased came with damaged paint, but I am getting a new one to replace this one. In the mean time I am very happy with my fuel consumption so far on this damaged Yaris.

I'm not going to get an accurate fuel mileage estimate with this car, because I'm not going to be keeping it long enough to fill up the tank when the dealer filled tank is empty.

I've got over 600km on the yaris now and still have 2 bars, I think it will be down to 1 soon, but still, if I had no gas I'm at 7 l/100km on a brand new car with:

The first 200km city driven with very little stop and go.
1 really slow 2 hour commute which usually takes 40-50 minutes A couple really slow hour plus commutes in the rain A little driving in Toronto downtown Use the a/c a little on one commute

I very, very rarely go over 100km/h and try to accelerate at a slow moderate rate, but this is still amazing to me. I only hope the car we get next week does as well.

I do try to shift into 3 or lower to coast to stops whenever possible, but I feel the gains here are very small on an automatic transmission. I also pumped the tires to 40psi to try and increase FE a little. I don't want to go much more than that as the tempreture can fluctuate greatly on the highway from 17 to 37 degrees from day to day and you can easily get a 10 degree fluctuation on a one way drive.