This one gets treated as a mechanic's problem, not a driver's, until a question frames it as a legal responsibility instead.
Here is one worth locking in:
If your tyres are worn below the legal tread limit, who is responsible, you or the last workshop that serviced the car?
The driver is responsible for ensuring the vehicle is roadworthy before driving it, regardless of when it was last serviced. Assuming "it was fine at the workshop" is not a valid defense, and that framing is exactly what catches people out in this type of question.
Beyond tyres, this category also covers brake condition and lighting faults, and when a fault becomes serious enough that you should not drive at all.
Your turn. If there is a roadworthiness rule you keep mixing up, post it here. If you know the answer to someone else's, help them out.
