If the Audi coupé B3 and B4 do not enjoy great success among collectors, the S2, the top model of the B4 range, is the classic exception. The reason is quite clear and a quick reading of the car's characteristics allows us to understand why the S2 B4 is highly sought after today: a five-cylinder 2.2-liter turbo 20 valve engine, 220 horsepower and a speed of 248 km / h; all-wheel drive, lowered suspension, increased brakes and stabilizer bars, Servotronic variable assistance steering, sport seats and specific body elements. The first series (3B) was produced from 1991 to 1992; the second (ABY), from 1993 to 1995.