I've had my new A3 1.6tdi sport sportback for a couple of weeks now and am disappointed by how unrefined the engine is. Many reviews mentioned how smooth and refined this engine is but I am finding it much rougher than my previous 2.0tdi. Especially under load or acceleration there is a marked diesel clatter. Anyone else finding this? The mpg is not great either. My previous 2.0tdi averaged 54.7mpg over 3 years and 70k miles of mostly motorway driving. At the moment I'm just getting low 50s from my 1.6. I know it will improve as the mileage increases and the engine beds in but it seems a long way from the low 60s I was hoping for when deciding to go for the 1.6 rather than a 2.0.