Yes! Then you would have triple exhaust.
If the hole is smaller than a nickel, I would not worry about it. If the hole is on the bottom side of the exhaust pipe, it might actually be a good thing, as it would allow the water in the exhaust to drain out before it enters the muffler. Some newer cars have drain holes in the exhuast system to prevent things from rusting out quickly.
No
Because if they did the car would not be able to move because it is solid and 1: you could not fit it in the car hole 2: you would not get anywhere 3: we are better of using liquids like petrol and diesel
it's a breather hole to let air in as fuel is used. without the hole the engine would stall or the fuel tank would collapse like a crushed beer can.
Radiators do not have exhaust.
You can drill a hole in anything as long as you have a strong enough drill bit and drill. But why would you want to drill holes in your exhaust? The exhaust piping is there to route exhaust gases away from underneath the car so they don't pool up underneath your car and seep into the cabin and cause a variety of health problems.
One of the causes could be a hole in the exhaust
there should not be any drain holes in an exhaust
Exhaust gasses are escaping through a hole or rotted section of exhaust system
you could have a small hole in your exhaust between your engine and your muffler....you can patch the exhaust or replace your exhaust
you may have s mall or big hole in your exhaust system. have it check out.