The Allure is a new generation of entry-level Buick sedan, replacing both the 
Century and 
Regal models that served the brand well for so many years. Known as the 
LaCrosse in other markets, the Allure looks and drives more expensive than it is. Buick went back to its roots to compete with the Lexus ES, a sedan that forced the American brand to rewrite its own rulebook for serene luxury.