we've had ours a little over a month and still love it...ours is the mid level EX trim with the 2.0T engine and AWD...regarding fuel economy, we did a trip from London to Freelton, then Burlington, then back to London last weekend...final reading was 8.8L/100 kms...i think that is pretty decent for a 4000 pound AWD vehicle wearing winter rubber.
Have you tried comparing the trip computer to manual calculations? I've been shocked at the disparity between this two numbers on this vehicle, when normally they line up pretty close...
in simple terms, sure...you can't get an exact manual measurement unless you fill the tank up to the top of the neck (where you put the pump nozzle in), then take note of your distance when it is empty(ish), then fill it back up to the same spot...then do your calculation that way...you can't simply log your mileage and base it on when the pump "clicks" off...the amount of fuel could vary for a few liters depending on the vehicle, the pump and the flow rate at the time...the car's computer knows exactly how much fuel is being used, and obviously knows the distance traveled, but there are variables there as well...the accuracy of the odometer and the fact we often use different sized tires in the winter can affect the accuracy there as well...the car's computer should be pretty accurate though.
I see your point here. However, I really doubt you're going to have a variation of a few litres when the pump clicks off. Accuracy of the odometer and different diameter tires of course can affect measurement, but not that greatly. In my Odyssey, I have noted up to a 1L/100km difference between what the display says and what the math says. However, over the lifetime, it's only been about a 0.5L/100km difference (approximately 30k kms).
One thing that people forget is the litres at the pump is corrected to an ambient of 15 degrees C:
https://www.ic.gc.ca/eic/site/mc-mc.nsf/eng/lm04344.htmlhttps://www.ic.gc.ca/eic/site/mc-mc.nsf/eng/lm00129.htmlSo at 25 degrees C, the correction factor of 0.9874 is applied and is what is displayed (i.e. if the display shows 10L, the actual measurement at 25 degrees C is 10.13L). Conversely, at -25 degrees C, the correction factor of 1.0492 is applied and is what is displayed (i.e. if the display shows 10L, the actual measurement at -25 degrees C is 9.53L). This is also part of the explanation why the hand measured fuel economy in winter can be exaggerated more.
The ECU calculates based on fuel pressure, injector flow rate and injector duty cycle. But what the ECU can't account for is any evaporation of the fuel while in the tank. The carbon canister traps those vapors and when the ECU turns on the purge cycle, it burns the vapors.
Just some food for thought.