In theory filling it would mean you carry more weight which might reduce your mpg by 2-3miles.....Does this cause poor fuel consumption if you fill it to the top?
What do you say to that..............It really depends on what type of driving you intend to cover, whilst filling up.
Casting your minds back to your schooldays - you'll recall talk about inertia, momentum, etc. in essence, the more mass there is to accelerate (and decelerate as well, remember), then the greater the force which is required to change velocity.
However, if the vehicle (or object) is accelerated to a constant velocity (on a level plane), then the force which is applied to maintain that speed is equal to the friction the object is experiencing (tyre & air resistance).
Quite a long-winded way to say that on the motorway - filling to the max is best (you also save on a wasteful stop, and paying higher prices), whereas for town driving, keeping it between a 1/4 and 1/2 is probably best.
Science lesson over for today - hope you were taking notes!
I dont see why Renault couldn't do better here. My 1997 Seat Cordoba had an mpg read out that did it to the nearest 0.1 mpg, although the highest I ever saw was 42.7 coasting down a hill :rofl:I always brim mine too, but then again, I do mostly motorway miles.
In the grand scheme of things, the difference in weight is pretty trivial. The fuel certainly weighs less than an adult passenger, and how many of us really notice a difference in fuel economy between driving alone and with a car full of people? Still, it'd help if the Lag's trip computer readout was a little more accurate - by the time you hit just over 50 MPG, the resolution has dropped to 1 MPG.