23: Acura RL
For years, the Acura RL soldiered on as the full-size sedan offering for the brand. The problem with the RL was that it didn’t offer V8 power or the refinement of competing models. In fact, to the outsider looking in the RL was nothing more than a jazzed-up Accord. Likewise, the poor sales numbers and reputation reflected this fact (via Car & Driver).
Acura would gradually improve the design of the RL, but it was never enough to boost sales. Finally, in 2012, the ax fell for the RL and the model was discontinued altogether. The Acura brand has experimented with many sedans, but nothing has seemed to click with customers.