Did a short trip home from work today ( 7.5 miles) and reset cars trip before I set off. When I got home the MPG on trip computer read 36 MPG, but the MyPeugeot app said it was 50.3 MPG. I would've thought that both values would be roughly the same?
I'm not worrying storeman simply wondering. I'm not looking for a complete MPG evaluation of the car, I'm just after the MPG of a particular journey and 7 miles is fine for that. As for the formula's been different there is onIy one- miles done divided by fuel used.7.5 miles is nowhere near enough to get a reliable MPG figure. It needs to use a few gallons not 0.2 of a gallon. Over time the reading will get close to a real world number. Worrying about a discrepancy on such a short journey is pointless. As for the discrepancy - who's to say the formula in the app is the same as the formula in the trip computer ?
If they give different values, they self-evidently are using different data. My guess is that the app is using data averaged over a longer time period. It shouldn't do that if you operated the app correctly, so if that's the case it's probably a coding fault.As for the formula's been different there is onIy one- miles done divided by fuel used.
I agree that the app has to be using different data, but as it gets the data from the car I don't know why that is. The app varies a lot with the MPG data where as the car is more consistent, so I guess it's a problem with the app.If they give different values, they self-evidently are using different data. My guess is that the app is using data averaged over a longer time period. It shouldn't do that if you operated the app correctly, so if that's the case it's probably a coding fault.As for the formula's been different there is onIy one- miles done divided by fuel used.
It's not as simple as miles divided by fuel used - the app has no way of knowing how much fuel is being delivered to each cylinder so has to have some kind of formula to guestimate the fuel being burned by the engine.I'm not worrying storeman simply wondering. I'm not looking for a complete MPG evaluation of the car, I'm just after the MPG of a particular journey and 7 miles is fine for that. As for the formula's been different there is onIy one- miles done divided by fuel used.
I'm off on a 150 mile round trip on Sunday so it'll be interesting to see if the app gets its figure closer to the cars.