In France, we have mandatory car checkup every few years where they test the pollution from the back of the car.
My old car, made in early 90 barely emitted more pollutant than regulation allow.
Ended up buying a Volkswagen Passat, very impressive it emitted a lot less. Then dieselgate happened... Now it's barely under what the regulation allow.
Keep your old polluting car, in the grand scheme of things it is better than buying a new one that end up polluting much more to build than what you would gain in everyday emission.
i can still remember avoiding road too steep lol.
Beside, when i am saying that keeping the older car is better for environment, i am not theorizing but speaking about things that have been studied.
https://www.sciencedirect.com/science/article/pii/S095965262...
https://onlinelibrary.wiley.com/doi/10.1111/jiec.13190
> Specifically, researchers find keeping older fuel efficient cars on the road longer reduces CO2 emissions significantly more than speeding up the global transition to green technology.
$OLDGUY_CUSTOMER (to my coworker): "Wow, I just saw a big crash on [nearby arterial road]! The entire front of the car was smashed in!"
$COWORKER: "Oh no! Was the driver alright?"
$OLDGUY: "Yeah, he seemed fine. There wasn't an ambulance or anything." [beat] "Man, they don't make them like they used to. When I was young, cars didn't crumple like that - it was much safer!"
Ugh.
(My semi-daily driver is over 50 years old.)