 It is a 2015 S4. I've always driven sport/luxury cars including Volvo S60 R-Design, Infiniti G35 and G37 Sports and this is one of the best I've had. Crazy fast, the sound and kick in the pants is intoxicating when you bury your right foot and that supercharger kicks in. Interior is one of the nicest and infotainment/MMI is the best for ease of use. If you love music as I do you have to go for the B & O sound system. Two minor complaints; front brakes needed to be done at 22,000 miles and I must be getting old because the seats aren't as comfy after about 2 hours in the car. Up for a replacement this fall and the short list consists of the new Audi S5 Sportback, the Volvo S60 Polestar or the Lincoln MKZ with the 400 hp twin turbo. I know, it's North American but I will know once I have driven it.UPDATE. The car goes back at the end of October and I am going for the Lincoln MKZ with the twin turbo 400 hp AWD. I am impressed with the car, only reason for changing from Audi is the Lincoln is a bit bigger, a bit softer (bad back) and it's maybe just time for a change. I will miss the roar of the Audi when you put your foot into it but the 2018 Audi with the turbo instead of the supercharger is a bit more subdued anyway.UPDATE 3/12/18. Have had the Lincoln MKZ for 2 1/2 months and no regrets. Absolutely amazing car and exactly what I was looking for. Best sleeper on the road.