I've had a V6 for what will be five years in August.
Years dont tell us much really as for e.g I have a bunch of chairs. Some are brand new, barely ever used. And a decade old. Some are used and trashed and need a rebuild - at least when I had a dog, and salty roads, mud etc - every year.
It all depends how hard you use them how well you look after them, how much water or road gunk/salt they see.
Then theres those that live indoors, barely go out, never saw a cold or wet road. Compared to those that do 15 miles outdoors, summer or winter, off road, sand, etc that dont look after or even clean them! And use the same chair every day, 16+ hours a day.
Not that this is relevant! Just sayin...
The chair will get stuck in snow higher than the bottom of the frame. The back can be uncomfortable when sitting for long periods. I wore out the cover and the foam over the steel used to construct the seat.
Most of use are rehab chair users. So need specific cushions or backs. The ones that come with a chair normally go in the pile of unwanted useless garbage in the garage. Cuchions or seat backs, get replaced as they wear or as your needs change. So not really sure what this means.
When coverage ends I can bend the seat back where it belongs and make a leather seat cover. Medicare won't support my getting a new back or getting new batteries.
Not sure still what this means. But if knackered get something more appropriet for your needs.
I don't know for sure, but the X8 may be a better bet for snow.
In straight lines outdoors maybe. But they have weird steering systems. And it makes them flop from one extreme left/right to the other when they see an obstacle. The tank steer algo that makes a normal chair steer wasnt ever intended to steer a set of front wheels in the way it does. And it tries to send the same tank steer algo to the rear wheels which cant turn in place (no casters) and so it stalls out the rear motors too as you turn. All a bit odd. And they are cars, with no ability to turn in place or as you manoever around and so dont work indoors. Totally different machines. Closer to a scooter with odd steering system han a wheelchair.