In 1991, five years after the debut of the Legend and Integra, Acura introduced the NSX, a midship V6 powered, rear-wheel-drive sports car. The NSX, an acronym for "New Sports eXperimental", was billed as the first Japanese car capable of competing with Ferrari and Porsche. This vehicle served as a "image car" for the Acura brand, heralding the introduction of Honda's VTEC technology. The NSX was the world's first all-aluminum production car, and was also marketed and viewed by some as the "Everyday Supercar" thanks in part to its ease of use, quality and reliability, traits that were unheard of in the supercar segment at the time. With the release of the NSX, Acura introduced the "A-badge", a stylized drafting compass used by mechanical engineers and architects to imply that Acura vehicles are built to precise and demanding standards.
Despite a strong start in market acceptance for the Acura brand, sales suffered in the mid-to-late 1990s. Some critics attributed this decline in part to less inspiring designs, which were re-branded Japanese-spec Hondas, such as the Acura Vigor in 1992, a response to the Lexus ES and Infiniti J30. Additionally, during this time Acura switched to an alphanumeric nomenclature formula, dropping the Legend, Vigor and Integra titles, following the lead of the NSX sportscar. The 1996 3.5 RL, which replaced the popular Legend, and the Vigor became the 2.5 TL and 3.2 TL, and was regarded by many as the epitome of this problem, namely because the alphanumeric designations were more anonymous than the former Legend, Vigor and Integra titles, which had grown into their own cult followings.[5] Also, the RL's 210 horsepower (160 kW) V6 (later increased to 225 hp), together with a high price and styling that cautiously copied the larger rear wheel drive and V-8 powered Lexus LS 400, did little against BMW, Audi, Lexus, and other competitors.
During this time, the NSX also lost sales as Acura made few changes from its original 1989 trim. A year later, the Integra sedan was withdrawn from the Canadian market, replaced by the market-exclusive Acura 1.6EL, a rebadged Honda Civic. The Integra sedan continued to be sold in the United States until 2001 (in name only, the model it was replaced with, the RSX, was simply a rebadged left-hand-drive version of the JDM DC5 Honda Integra).
Despite these letdowns, Acura gained prominence in the 1990s with a young group of customers: "tuner" enthusiasts. Parent company Honda's reputation with this demographic as a maker of "easy-to-tune" and "rev-happy" engines rubbed off onto Acura, and the Integra became a popular tuner car.
