The Embraer E175 has become a vital part of the worldwide aviation network, feeding passengers into larger hub-and-spoke systems over 20 years of production. The program launched in 1999, and the first model flew commercially with Air Canada in 2005. According to Key.Aero, over 1,700 examples of the E-Jet family had rolled off the production line as of December last year, including 805 E175s, and the E175 remains in production thanks to strong demand, particularly in the United States, where it holds an approximate 80% share of the regional jet segment.
By modern standards, however, the E175 can be considered loud. According to European Union Aviation Safety Agency type certification documents, an E175 weighing 85,517 pounds at takeoff was measured as producing 84.4 decibels of effective perceived noise during a flyover in 2025, against 83.9 decibels for a CRJ900 of similar weight. The deeper reason is bypass ratio: the E175's GE Aerospace CF34-8E engines, developed in the late nineties, have a bypass ratio of just 5:1 and produce up to 14,500 pounds-force of takeoff thrust. Against International Civil Aviation Organization standards introduced in 2006, which the E175 is said to "meet or surpass," the newer Airbus A220 differs by 18 effective perceived noise decibels.
The A220 comparison shows what newer technology changes. Its Pratt & Whitney PW1500G geared turbofan engines have a bypass ratio of 12:1 and a 73-inch fan, and Airbus says the type's noise footprint is as much as 50% smaller than previous-generation aircraft. A higher-bypass engine accelerates more air around its core than through it, relying less on high-velocity exhaust gases, a significant source of jet noise. Embraer's own successor points the same way: the E190-E2 and E195-E2 use PW1900G engines with a 12:1 bypass ratio, and the future E175-E2's PW1700G is set to offer a 56-inch fan, a 9:1 bypass ratio and 14,000 to 17,000 pounds-force of thrust. Noise still varies with seat position and flight phase, and takeoff, when engines run at high thrust, is when the E175 may appear surprisingly loud for a regional jet.
