upon introduction, both variants are performing above their original specifications and the cs300 range is 2% better than the brochure, as are its per seat and per trip cost. airbaltic reports a 2600 l/h fuel consumption against 3000 l/h for its boeing 737-300 with similar capacity. it then claimed 21% better fuel efficiency. fuel burn is more than 1% lower than the marketing claims and bombardier will update its performance specifications later in 2017. the cseries is 25% cheaper to fly than the avro rj100 which it replaces at swiss. on long missions, the cs100 is up to 1% more fuel efficient than the brochure and the cs300 up to 3%. the cs300 burns 20% less fuel than the airbus a319, 21% less than the 737 classic while the cs100 burns 18 to 27% less per seat than the avro rj.