I bought an 09 CE at the beginning of June, and I do a lot of driving.
I'm generally 50/50 Highway/City driving, and I don't seem to be getting the best mileage.
The last tank I filled up I averaged around 6.6 L / 100km, and that is the bare lowest number I've seen over dozens of fill ups (Over 8000km on the clock, dealer oil change a week ago). That tank was a test on how low I could get the number, no speeding, steady acceleration, even coasting in 5th gear at 50 kph.
The only thing I can think of is that the onboard computer forces the engine to run rich until a certain number of kilometers have been put on the odometer. I asked the dealer but they didn't know much about that fact.
There has recently been an advertising spree going on where the Corolla is lauded as going over 1000 KM on 50 liters, I can barely get 600 out of 40 liters.
Anyone have some insight on what might be going on?
The Corolla is rated at roughly @ 5.6L/100km (50mps Imp./ 42USmpg) highway and 7.8L/100km (36mps Imp./ 30USmpg) city.
You are doing 50/50 city highway and getting 6.6L/100km (43mps Imp./ 36USmpg). Even rough guessing you should get halfway between highway and city and you are right on the money. Anytime you drive city it pulls your economy down. Watch your real time L/100km on even the most gentle take off from a stop and it is real hard to keep it below 7l/100km. Heck if you did 10/90 city highway you would get less than all highway. That over 1000km/50L is claim for 100% highway at speeds between 90-110km/hr on a pretty flat strip of highway and they ran the tank completely dry until it stalled. 40/50L means you aren't empty and you could probably go another 100km easy with some to spare. Watch your real time L/100km and you will learn its all about load not necessarily speed.
I have reached the claimed fuel consumption on every tank, I fail to see how you are confused by getting what the rating is.
constant 60Kph is better than 50kph. The most gas efficient speed is 90Kph. My car runs 90kph at cruise mode, no up down hill, only takes 4.4L/100KM. The average consumption at 90kph is about 5L/100Km.
After a little over 13,000km my XRS trip computer shows 7.7L/100km so 30.5 mpg, I dont worry about slow take offs or coasting down hill, I just drive.
__________________ 2001 Toyota Tundra TRD 1994 Jeep YJ - no top, no doors May-Oct 1996 Toyota Tacoma - RIP! frame recall $16,638 2009 Toyota Corolla XRS - SOLD
I have a question about mph as indicated by avg mpg indicator, vs computed at fill up.
I've had my 2009 Corolla for several weeks. The avg mpg on the indicator was 40.4 mpg and 40.6 between 2 fill-ups. The manual fill up calculation gave only 38.3 and 38.5 mpg. It seems like the avg mpg computer makes an optimistic result. Anyone else getting this kind of discrepancy ? Any ideas how this might occur? I think I was consistent in filling the tank.
I have a question about mph as indicated by avg mpg indicator, vs computed at fill up.
I've had my 2009 Corolla for several weeks. The avg mpg on the indicator was 40.4 mpg and 40.6 between 2 fill-ups. The manual fill up calculation gave only 38.3 and 38.5 mpg. It seems like the avg mpg computer makes an optimistic result. Anyone else getting this kind of discrepancy ? Any ideas how this might occur? I think I was consistent in filling the tank.
On board MPG calculation is notoriously optomistic regardless of vehicle manufacturer. I suspect your calculations are more accurate than the on board display.
To get a true avg. MPG you need to track many tanks and then avg. those.
I've tracked my 07' since new and avg. a hair over 35mpg. 18,000 miles on the clock.
On board MPG calculation is notoriously optomistic regardless of vehicle manufacturer. I suspect your calculations are more accurate than the on board display.
To get a true avg. MPG you need to track many tanks and then avg. those.
I've tracked my 07' since new and avg. a hair over 35mpg. 18,000 miles on the clock.
^^This is true. I am finding its about 1-1.5 mpg optimistic. It can only calculate when the vehicle is moving so idling, inching through traffic etc. can throw it off accuracy.
Actually it should be possible to accurately compute the mpg even with idling and stops. It would do that by dividing the accumulated miles by the accumulated fuel usage. If you are just sitting idling, the fuel flow continues, but the miles are not accumulating. So it should divide whatever the total miles is at that point by the accumulated fuel usage as it continues. But car companies probably bias these mpg computations to be optimistic.
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(Poor) Mileage questions
2009 Toyota Corolla
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