Hi, I dont know if it is a Zafira 'A' or any other letter! But it's a 54 plate diesel. Whilst driving, the turbo switches itself off. We notice a loss in acceleration power, it loses it's 'oomph'!! At the same time the engine management light comes on. If we turn off the engine, and back on again it corrects itself....until it decides to switch off again! I will take it to be fixed at a garage, but would like any advice you can give so I have an idea of what to expect! Thanks in advance.