Not really, My passport gets anywhere from 17mpg to just over 42mpg depending on how I drive and road conditions. On a typical long highway road trip I always average just over 25mpg. Around town stop go in sport mode hard acceleration under 20mpg. Mountain driving over 35mpg. If I drive it like a Prius in green flower and utilize VCM then over 40mpg.40.3? Stop it!
AWD as well. Light input to throttle up or down is almost all front wheel drive with hardly any power going to rear wheels.With 2WD, open freeway and a lightfoot on the gas, 40.3 mpg is easily achievable.
It's really hard to get accurate without knowing the temperature of the fuel. That being said, Hondas computer is close to dead balls on. I have checked it against a calculator, using the same pump and about the same time/temperature. I'm within .08 - .3 mpg consistently compared to onboard computer. That's plenty close.If you aren't figurine you mileage by hand then you really don't know what you mileage is. The onboard guesstamator is doing just that, guessing at what mileage you are getting.