I doubt the RP2040 is automotive grade. Cars are pretty harsh environments for electronics, they have to operate in all kinds of climates, hot, cold, humid, dry

I doubt the RP2040 is automotive grade. Cars are pretty harsh environments for electronics, they have to operate in all kinds of climates, hot, cold, humid, dry, with condensation, vibration, large voltage spikes while the car is getting cranked, etc. I don't think any manufacturer would sign off on such a replacement, only to have to recall the cars later on due to the replacement chip failing.