It's the sole choice on the new Bombardier C-Series, and a strong rival to an engine produced by a GE GE 0.04% partnership on the best-selling Airbus A320-neo.

United Technologies has suffered a few setbacks this year, including a fire in the prototype for the geared turbofan on the Bombardier C-Series and an engine blowout on the F-35 Joint Strike Fighter.

C CHIC, a play both on C'est chic (It's chic) and the C series cars, is the name of Citroën's exhibition on the Champs Elysées in Paris.