With a low base price and a big back seat it’s no wonder the Q50 is one of the best selling compact luxury cars in America. For 2017 Infiniti ups the ante with a trio of new turbocharged engines ranging from just over 200 horsepower to a 400 horsepower twin-turbo V6. If fuel sipping is more your style, the 360 horsepower hybrid carries over from last year and will give you some of the highest real world MPGs in the luxury segment.