Strong and responsive yet fuel-efficient powertrains; stylish interior; nicely proportioned exterior; excellent quattro all-wheel drive system; advanced infotainment and connectivity; great soft-top arrangement in the cabriolet. The 2014 Audi A5, S5 and RS5 are a family of compact luxury coupes and cabriolets. While the powertrains and some of the performance hardware are different among the three models, much of the same features are carried over and they have essentially the same seating space and design, though coupes have seating for five while cabriolets can seat four. The A5 lineup offers a good alternative to the BMW 3-Series, Cadillac CTS coupe and INFINITI Q50 coupe. In S4 form, it offers one of the best compromises between ride, comfort and performance of any of these models, while the RS5 takes performance coupes to a new level, with 0 to 60 mph in just 4.5 seconds, according to Audi. With the Audi Connect system and revised MMI controller and its live Google Earth maps, it has one of the best (and best-looking) infotainment systems.