Real world fuel economy from new GE Jazz

[rossw]

I probably should've noted, when I bought the car I confirmed it's speedo against 2 GPS units (one navman one tomtom), as well as confirmed the fuel consumption avg figure against the amount of fuel I had acctually used in the tank at each fill.

I monitored the fuel consumption over about 5 tanks when I first had the Jazz....it was accurate enough to be indistinguishable.

I should've also pointed out, the highest fuel consumption was also in summer and the air-con on basically full-time.

It must only be the GEs that have the accuracy problem.

[rubyjazz]

My normal consumption is still 9.5-10L/100kms. Without aircon.

If I'm very slow in accelerating from stop or turning, since I don't want to push it and save gas - the guys behind are pretty irritated.

[dyljoy]

How many km u done so far? 9.5-10L/100kms since too high without aircon, my highest one is around 8.8L and I am always run with aircon.

[rubyjazz]

I've done around 2000kms+ on it so far

[dyljoy]

oic, then ur car isn't pass run-in period, u should be achieve better fuel consumption after 3000+km

[rubyjazz]

it's already on 11000 kms, since I got near 9000kms. So I've been driving it for 2000kms.

The overall for 11kms is 9.5L/100kms.

[Everybody2]

Just out of curiosity....

If you find a stretch of road that is town speed...ie 50-60kph, reset the fuel consumption meter/trip meter/whatever it is the GE Jazz's need to have done to reset the fuel consumption device, and maintain the speed (very careful with the accelerator).

What figure do you get?

Doing the same test at 50kph in my CVT it's around the 3.2-3.4L/100k's, wavering mainly due to a human's inability to hold the accelerator 'dead steady'.

I would like to hear what fellow Jazz owners who own the same model I have get as well...

[rossw]

Just out of curiosity....

If you find a stretch of road that is town speed...ie 50-60kph, reset the fuel consumption meter/trip meter/whatever it is the GE Jazz's need to have done to reset the fuel consumption device, and maintain the speed (very careful with the accelerator).

What figure do you get?

Doing the same test at 50kph in my CVT it's around the 3.2-3.4L/100k's, wavering mainly due to a human's inability to hold the accelerator 'dead steady'.

I would like to hear what fellow Jazz owners who own the same model I have get as well...

No need to reset. I just use the instantaneous gauge. It sits around 4 ish on the gauge at that speed on the flat. Doesn't mean much. Turn on the aircon or open a window and it will change. Plus dead flat is hard to find.

[gd1_nz]

My normal consumption is still 9.5-10L/100kms. Without aircon.

If I'm very slow in accelerating from stop or turning, since I don't want to push it and save gas - the guys behind are pretty irritated.

I am having similar fuel consumption with my Ge8 auto. The fuel consumption is horrible and i have now done 5000km. Are you guys using 91 or 96 petrol.

Also, I have noticed that the 1-2 gear change is getting very harsh/ uncomfortable at times. Has anyone noticed the same thing?

[debowen]

GD1_NZ, get back to Honda after recording carefully your consumption. Fill the tank right up to the filler threads of the caps. Zero your trip metre. When the reserve light comes on you have about 70km left, so fill up again to the filler threads. Note litres used and kms on the trip metre. Calculate your consumption. If it is as bad as you say, get back to Honda, there is something wrong with your tuning. Maybe check your compression in all cylinders, the rings may not have bedded in, or the values sealed?

[gd1_nz]

GD1_NZ, get back to Honda after recording carefully your consumption. Fill the tank right up to the filler threads of the caps. Zero your trip metre. When the reserve light comes on you have about 70km left, so fill up again to the filler threads. Note litres used and kms on the trip metre. Calculate your consumption. If it is as bad as you say, get back to Honda, there is something wrong with your tuning. Maybe check your compression in all cylinders, the rings may not have bedded in, or the values sealed?

Thanks for the useful input Debowen. I will start noting down the details of the tank that I have just filled up tonight. Since day 1, I have never got a tank over 480km (when the llight comes on) and I do 50/50 highway/town driving. I rarely turn the aircon on unless its raining and I drive the car very gently. Maybe this could be the problem, I have never even redlined the car and so the rings may not have bedded in??

[Everybody2]

Does anyone forsee an issue with using the paddle-shifters when cruising for long distances at high-speeds (for the increased economy effect described before)?

Just thinking, when the CVT is in full auto mode, the metal belt that is used to transmit drive between the pulleys normally dynamically slides up and down the V shaped pulleys when hunting for gear ratios and it never spends too much time in the one spot to be an issue.

If using the 7-sp mode and selecting a gear for a prolonged period of time, then there could be a chance that having the belt sit on the pulley would wear a ledge on the pulley? - this would then make the belt 'train-track' into this grove even when in CVT mode?