 Audi's 4 cylinder engine - 2.0 ltr - is a poorly designed and engineered engine.  It is not smooth and has a slight roughness at idle. The engine burns oil -about one quart every 1200 miles or so.  Audi USA says this is normal for a car with an MSRP of $40,000+.  Audi obviously went the cheap route and doesn't ant to stand behind its product. I buy or lease cars for their engine reliability.  And in this department, Audi is a definite loser.  Buy or lease a Honda Accord, Lexus, Toyota- upscaled models nicely equipped.  They are far better cars and their manufacturers stand behind their products - unlike Audi.