Having previously spent 2 years with a sales team at a Skoda main dealer i can tell you that the dealership will have known within a 2 weekish window of when your new car would have arriaved from the docks at grimsby. But they dont know foreshore until it turns up on the forecourt. Their has been alot of problems with time delays on all Skodas recently down to the new testing regulations. They are not allowed to use a car that has been ordered and taged to a customer as a demo car to any one. The mileage should be under 10 miles, so if its over it could be a tell tale of usage. But it could have been taken to the petrol station for fuel as they are delivered in fumes. It wont need to be registered to be driven on the road they could have thrown on trade plates. Look at the mileage if its over 10 be suspicious
