a little wider than 2 cars
Normal width of a single car garage is 8' feet. Normal width of a double car garage is 16' feet. These answers are for doors typically found in the USA.
The width of a standard single-car garage door is typically 8 to 9 feet wide.
Typically, a 2 car garage minimum width is 24'. This said, there is no reference to minimum widths for garages in the IRC building code that I can find.
The standard width of a one-car garage door is typically 8 to 9 feet wide.
The standard width of a single car garage door is typically 8 to 9 feet wide.
The average with of an one car garage is 12 feet. Many people will want a few extra feet of width for storage.
The standard width of a double car garage is 20.5 feet. That is a big enough size to fit a large sedan and a truck inside.
20 feet
The standard double car garage door is 16' wide x 7' high. A two car garage should typically be a minimum of 20' wide (inside) to allow the doors to open. 22' to 24' width is preferred.
Yes my garage width is 2" too small to drive in. With mirrors folded I have 2" clearance each side
Generally 8' or 9'
You'll need to get a nonstandard garage door (not single-car width), so that may be very hard to find.