Specifically, the lag is to be expected with a TURBOdiesel. I'm pretty sure it has much more to do with the turbo and less with the fact that it's a diesel. Any gasoline engine with a single turbo will behave the same. The lag is there, it's very short in duration, and when the turbo kicks in it's the real deal. Unless you go to some super sophisticated twin or more turbo setup where it is designed to maintain some degree of boost even at idle, you are always going to perceive some lag. In this vehicle, I don't even notice it when driving normally, i.e., not mashing the gas from every stop. I would say it becomes noticeable with moderate and up throttle application. Frankly, it just is what it is. What's the concern? It's just a matter of getting used to it, in the same way you might have to adjust to a SUV when switching from a car.