Although two prototype engines were built and ground tested, the RJ500 project was cancelled when Boeing rejected the engine, in favour of the CFM56-3, for the 737-300.
Around 1982, attention focused on developing a more advanced engine in the 25000lbf thrust class for the 150 seater market. Pratt & Whitney, MTU and FiatAvio joined the consortium, by then named International Aero Engines, shortly afterwards. The V in V2500 denotes the five original partners, whilst 2500 symbolizes the original thrust level of 25000 lbf. FiatAvio later withdrew from the V2500 consortium.