Is the side to fill up evenly balanced between cars in average? I imagine there is value to make it close to 50/50 to simplify the logistics at the gas station. I was thinking car manufacturers perhaps had agreed so that some brands do it one way and some do it another
I recall looking at a car to buy, and the salesman toted the gas cap on the right as the "safe side".
The logic was, if you run out of gas, you can refill on the side away from traffic.
Dumbest design reasoning. Plan the side, for an event most people never experience?! Or if they do, once... and maybe on a rural dirt road, not necessarily a freeway.
Even if there was a single side for filling, direction of approach being random is enough for 50/50 utilization of the pumps — so I’m not convinced there’s a pressure to spread which side the tank is on.
Costco and Sam's Club usually have their filling stations set up for one-way traffic, but offhand those are the only ones I've seen that way in US, Canada, Caribbean, and western/central Europe (though the Euro design of filling stations just off the highway encourages one-way traffic, it doesn't mandate it). Haven't driven myself elsewhere.
Here in Finland at least there are a lot of completely unattended pumps that once you exit the road it’s basically just a patch of land and you pull up in whatever direction you want to match the side of your tank to a free pump.
But in the UK where I’m from and just got back from this is maybe less common.
Why would it matter? Just park on any side, I've never been to a fuel station where the hose wouldn't reach to the other side if needed. Or since you said gas and not petrol, is that an American thing? Do you guys have short hoses thah don't reach?
Our plugin hybrid has both a gas side on the left and electric side on the right. The electric side on the right is helpful in the US to allow parking curbside and charging the vehicle.