Which Passenger Jets Have 4 Engines?

The only commercial airliner with 4 engines that is in production today is the Boeing 747. Other 4 engine aircraft that can be seen are the Airbus A340 and the double decker Airbus A380. Due to their inefficiency the numbers of these planes in service will continue to decline over the next decade.

Does Boeing 777 have 4 engines?

I have noticed for a while the A340 has four engines and the Boeing 777 only has two engines and they are about the same size. So why can't an A340 have two engines instead of four? On a jumbo jet like the B747-8 four engines are a requirement.

Why do some airplanes have 4 engines?

To meet the power needs of an aircraft with the 747's weight and carrying capacity, four engines were required. They were also required for long over ocean flights, to insure that the aircraft could make landfall in the event of a loss of an engine...