Hi Steve, it seems to happen when the car has been on a long journey. It’s when you’ve had to slow down, due to volume of traffic, roundabouts etc, then when you start to accelerate, it splutters before picking up speed. The dealership are now telling me this is normal on hybrid cars - it’s like the car is doing a hiccup before the power kicks in. The ‘hiccup’ can be quite a clunk!