If you had no interest at all in car engines why would you know or even care which cars had a diesel engine.
In which case, I am not sure they should be allowed to drive.
I was taught that, to be a driver must also include knowing something about the thing I was driving, if only to have more respect for the power of the vehicle.
I am of a mind that we don’t have to be an expert vis-à-vis the tools we use, but we should at least know enough to respect them.
Case in point: I am not a ‘device’ guy, but I use them all the time. My kids may still have to point out to me that I could this or that task more efficiently on my device, but I think it is up to me to at least understand enough to then apply what they are saying to me.
To not know the most basic ideas about cars is, more than likely, to not be able to use them properly either.
I can’t count the number of times I have witnessed people doing damage to their own vehicles because they don’t have the slightest concept of how they work.