One of the features of the A340 was that it was available with the same engines as the A320s. That made a „one engine for the entire fleet“ policy possible for

One of the features of the A340 was that it was available with the same engines as the A320s. That made a „one engine for the entire fleet“ policy possible for airlines. Turned out, fuel costs were more important. Another fun fact: The two-engine A330 has the same fuselage, only the wings and engines are different. Airbus offers now a new, more fuel efficient engine option for the A330, which still sells and is still in production.