A safe speed to drive a car depends on several conditions:
If your on public roads you can drive at any speed up to the speed limit for the road your on provided it is safe to do so. In the UK the fastest speed limit is 70 mph on most motorways and duel carriageway's.
I don,t drive car
it is safe to drive slower because you could get in a car accident if you drive really fast
NO! Depends on your definition of safe?
Always
The driver is responsible for the condition of the car and the safety of passengers. It it is not safe to drive, don't.
Depends on your definition of safe.
Yes
It is safe to drive you car for at least one mile after the check engine light comes on.
In full speed and chek the speed
Yes
NO, not safe to do so