from what i remember of my driving lessons the car should be no further than 18 inches away from the curb when parked. any further and i was asked to call a taxi to reach the pavement!
No closer than 10 feet
When you do parallel parking you must align the wheels strictly parallel to the curb, and then shut the engine off.
18 inches
Your vehicle should be no more than 18 inches from the curb.
12 or less inches
yes
When parallel parking, you should aim to be no more than 12 inches (about one foot) away from the curb. Being too far from the curb can obstruct traffic and may lead to a parking violation. It's important to ensure that your vehicle is safely and properly positioned to allow for the smooth flow of traffic.
From the Calfornia DMV web page on parking: When you park alongside a curb on a level street, the front and back wheels must be parallel and within 18 inches of the curb. Park parallel to the street if there is no curb.
I think that would depend on the county and country in question. In the UK, "next to is next to" and you get a ticket.
1 ft. (30cm.)
Within no more than 30 centimeters.
Maximum 18 inches in most areas