The noise is great when you fire then up for the first time. If you have a public standing around its possible to make it sound like your having a bit of bother starting it before the engine roars. The low turbine whine on the Leopard when it starts is just as good. I keep it behind the sofa and fire it up while the others are still trying to get their heads round the controls on the Tigers. Let battle commence (if you have the optional shot detection system).