 The Acura TLX is a four-door, what it calls entry-level luxury sedan, which at the same time is considered the flagship sedan for the brand OK, whatever. And it was introduced to the automakers lineup in 2014. Replacing both the TL and TSX models, the TLX is the mechanical sibling to the Honda Accord. Designed at its Los Angeles design studio, the production version of the car was unveiled at the 2014 New York International Auto Show.