How often does the computer calculate Fuel Consumption (CON) reading on the display?

I'm not sure, but a guess would be about every minute or so because of the one minute consumption graph. However even the one minute update seems to take a bit longer then a minute .

Also it would depend on the distance travel since the "Trip" meter A or B had been reset. The further the distance the "slower" it will be to change or update. I use "A" for each fill up and "B" for shorter trips. Today for example I did a run of about 30km and my A trip went from 4.0 to 3.9lts (I'm sitting abut just over 400km on it) The B trip was reset and jumped up to over 8 when I stater then moved down to 6-5 quickly then down to 4 and after 30 km I actually had it at 3.4 while was pretty thrilling.

Hope this made sense

 

when you say rev the engine, i relate that to neutral in a standard car. do you mean in drive? that being said, i believe the gen II is every 3 seconds.

 

toyolover sorry for my misunderstanding of the question. I drove a 325i for a number of years and know which gauge you refer to. With it I was quite happy to see it between 8-10Lts .. funny how perspectives change.

I have to admit I haven't notices a hugh lag on the Prius, wife has the car today but I will check tomorrow. I do keep an eye on this gauge most of the time as I find it give the most immediate feedback and when I accelerate from a stop it "seems" to respond pretty much realtime with the pressure I put on the gas pedal and once I remove my foot/let off the gas the bars drop realtime as far as I can recall.

As I said above I will check tomorrow, but could the "lag" just be the type of display digital bars rather then an analogue needle?? not sure.

Dan

 

There is a bar on the right side of the speed indication (opposite the fuel level indication), that reports instantanious fuel consumption. Maybe that is the one you´re looking for.

 

it updates about every 5-6 seconds or so. when u first fillup your tank, then drive off, u can see how often the MPG rating of your fresh tank changes as it will pretty much change constantly for at least the first few miles

 

OK, I filled up this morning while my engine was slightly warmed up (thus the numbers fluctuated rapidly). The Consumption readout refreshes approximately every 10 seconds.

I pulled out of the gas station (after resetting my Trip odometer) and was stopped at a red light for about 30 seconds. I was counting as the numbers changed and I usually reached 10 - 11 seconds when it refreshed. Call it a 10 second refresh.