I've lived in and driven in several different cities in the US, and driven around the world. What I've observed is that broadly speaking, brand doesn't matter, but affordable sporty cars tend to be driven by younger people who are likely to drive more aggressively and riskier (see Subaru WRX vs Subaru Outback). Also, broadly speaking cars that are older and in worse condition tend to be driven more aggressively, there seems to be some latent rage and general uncaring about yourself/your vehicle that happens when poorer people drive poorer cars (see nearly every Nissan Altima in the US).<p>All that said, I've also observed that BMW drivers are a special sort of asshole. It's not necessarily that they drive aggressively, rather it's that they drive like they own the road and that nobody else exists. Things like driving at their preferred speed rather than the speed of traffic/the road (e.g. left lane rolling roadblocks and doing 85 in a 40), not using turn signals or merging appropriately into traffic, and poor lane discipline (seems I see more BMW drivers on their phone while driving).<p>At least in Colorado, I've observed that Tesla drivers are basically BMW drivers that have an even higher opinion of themselves because they're "saving the environment" or they're Ubers, pretty much only one of the two. Everything I said about BMWs applies to Tesla drivers here as well, except you get the addition of them taking off from stop lights with all the torque they can muster to light-speed across intersections within moments of the light turning green (meaning they're at risk of being involved in a crash with somebody who runs a red/squeezes the lemon and misses).<p>On the other hand, every time I see a Porsche, it's usually an older guy who is meandering along in the right lane, drives very respectfully, and generally drives like they just desperately don't want anyone to fuck up the car that is their prized possession. I have never seen a Porsche driver driving aggressively on the road here, in many many many miles of driving.