RWD versus snow.
Back in the old days, this combination was usually a recipe for spinouts. But nowadays, with advanced traction control systems, most rear-wheel-drive cars fare rather well in snow.
More Cold Weather Info
However, the ultimate test is often the stopping-on-a-snowy incline. That's attempted in this here video and the result is as expected. Or, at least, it's as we've seen before.
Our advice is quite simple. If you live in a snowy region, buy AWD. If you bought RWD, simply equip it with snow tires and you'll be all set.
Day 338 - We got some snow so I took my Model 3 out in the snow and had some fun. Also, tried stopping on a hill and couldn't start up.
Current Software Version: v9 (2018.50.6)
Configuration: Tesla Model 3, Red, Rear Wheel Drive (RWD), Long Range Battery (LRB), Enhanced Autopilot (EAP), Full Self Driving (FSD) (still waiting for this....), Premium Upgrade (PU), Standard 18" Aero Wheels (too many potholes in my area).