Those 'miles to empty' indicators are calculated off your most recent gas consumption, so if you coast down a long enough hill using just a tiny amount of gas, your 'miles to empty' reading will look a whole lot better than if you just accelerated hard to get on the freeway and have been maintaining high revs @ hwy speeds since. So what you tell us isn't beyond the realms of possibility Jcummins.

Altho as UtahPete mentioned earlier, the gas gauges & other similar 'BRP in-house developed' electronics are quite renowned for their ummm, shall we say, lack of real usefulness??

You should see the variations I got in my gas gauge - sometimes it told me I used almost 5 gallons/20 litres of gas in just 200 yards from a careful fill-up; yet with the very next fill-up, the gauge might still've said it was
FULL despite me having just ridden almost 200 miles on it - and that's with the
smaller tank the V-Twins run too!! :shocked:
So given that the 'miles to empty' info shown is probably well within the bounds of possibility if you were coasting or ryding gently/slowly, but also possibly based upon a potentially wildly erratic 'gas remaining' reading & what appears to be a fairly short view of the engine's 'recent gas usage', variations & readings like those you mention are not only possible, but really shouldn't be surprising. It's just the way these things work.... especially with BRP's electronics!! :thumbup:
Given that, I really wouldn't
EVER rely on that 'miles to empty' reading!! Just Reset the Trip meter every time you fill, and then keep an eye on how far you've travelled since you last filled; maybe even work out your average mpg occasionally so you can get a pretty good idea of how far you can go while still leaving a quart or so of gas in the tank. It shouldn't take you too long/too much in the way of calcs to get a reasonable idea of what distance is safe and then never exceed that - you
REALLY don't want to run these modern fuel injected engines dry too often, if ever!! :shocked: It's not good for them and even just running them dry
once might badly impact your fuel economy &/or power.... maybe even do something worse! Run it dry or very nearly dry too often and you
will be almost guaranteed to be doing some permanent harm to your injection system &/or engine! :lecturef_smilie: