Final answer:
The luxury sedan introduced by Acura in 1986 was named the Acura Legend. It helped establish Acura's presence in the luxury car market.
Step-by-step explanation:
In 1986, Acura introduced a luxury sedan with the name Legend. This was a significant event in the automotive industry as it marked the entry of Honda's luxury brand, Acura into the market. the Acura Legend was well-received for its combination of luxury, performance, and advanced features for the time. It played a crucial role in establishing Acura as a competitive luxury car manufacturer.