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 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.