Rewe in central Germany got free range for 2.69€.

Most cars can be cracked with a simple receiver. A little bit of trust is needed for the convenience of society. Breaking that trust usually makes things worse for everyone.

Games have specs on steam. We could easily get a performance percentage for gamers with less than optimal setups without blasting their systems. I personally have a good one yet may struggle during forced windows updates or when my ssd is getting heavy loads from my other apps. That would not be caught by such ratings.