Despite the sports car racing suggestion the word "Sebring" offers and the dramatic tone of the word "Avenger," neither brand amounted to much more than ordinary transportation in the versions featured in this post. (An earlier Sebring model was popular because it was a convertible, something hard to find in its day.)
The 2007-10 Sebring and 2008-14 Avenger are interesting due to the considerable effort expended in making the sedans different even though they shared the same basic unit body. The Avenger sold reasonably well, averaging some 75,000 units per model year. The Sebring's quirky styling was probably the reason its sales were less, about 58,000 per year and on a much shorter production run, though price might have been a consideration.