I am not sure if anyone knows the difference here. I went to a dealer and decided to buy a pre-registered car. Two colors are available, red and grey. Red one is 200£ cheaper than grey one. Though I prefer grey one, I chose the red one eventually, because of the price. In the afternoon, I got a phonecall from the salesman and asked me if I would like to swap my car to the grey one, because they have reduced the grey one to the same price as the red one. The two cars are the same specification. The grey one is claimed having 50 miles on it, but actually when we were inside the car, it show 12 miles there. And when we checked the status of these two cars, the red one is on SORN but the grey one is taxed. Is it possible that the grey one is actually used by the dealer themselves and then the milage was changed by them? Really like the grey color but not sure if we should go for it. Please help me