Audi Sport (formerly Quattro GmbH) is Audi's performance division responsible for building the Four Rings' line of fire-breathing RS cars. The division launched its first car, the RS2, back in 1994 and has built 25 new RS models in the past 25 years. In the United States, Audi Sport doesn't have quite as strong of a fanbase as BMW M or Mercedes-AMG because up until recently, it has only offered a handful of RS cars stateside.

The US currently receives the RS5, RS5 Sportback, RS3, and TT RS, and we will likely get the refreshed RS7 when it is finally revealed. Audi Sport says it plans to introduce six new models in 2019 alone, two of which will be entirely new to the RS lineup. Although, it remains to be seen if these two new RS cars will make it to the US.

In either case, to celebrate its 25 years of building RS cars, Audi Sport has gathered six RS wagon models, including 1994 RS2, 1999 RS4 Avant, 2005 RS4 Avant, 2008 RS6 Avant, 2011 RS3 Sportback, and brand-new RS4 Avant for a celebration. "Every RS model expresses the passion that we put into developing our high-performance cars," said Oliver Hoffmann, Managing Director of Audi Sport GmbH. "For 25 years, our customers have been experiencing the RS models as masterful companions for everyday life that convey pure emotion and maximum driving enjoyment." Sadly, none of these six were ever sold in the US, but the RS2 is eligible to be imported and driven on our roads in 2019, and the next-generation RS6 is rumored to be sold in the US for the first time ever.

Of the six new RS cars scheduled to debut in 2019, we already know about the facelifted TT RS and RS5 Sportback, new RS Q3, and next-generation RS7 and RS6. This leaves one unknown RS model, which is supposedly all-new to the RS lineup. Audi also said two of the six models would be all-new RS models and the five we know about aren't new, so perhaps there may be another secret in the works.