I just purchased a 2008 A4 2.0T. Low mileage - runs great. However, I’m questioning the sound of the exhaust....or engine. Since I don’t know what is normal, I’m just wondering now. With the windows up, the slow acceleration sounds just a bit low and “ throaty”.. can someone tell me if it should be perfectly quiet when first beginning to accelerate? Beautiful car - very peppy. Thanks.