We recently purchased a car on a PCP, using our old car as a trade in. The car we purchased from the dealership was advertised as a 2.0-litre. All signed paperwork states this. On receipt of the V5C, it is actually a 1.5-litre model. We have contacted the dealership to ask for replacement 2.0-litre model as that is what we were sold. They stated it was a typo and we can just return it as we are within 30 days of purchase. They currently have the same spec 2.0-litre model in stock but is obviously more expensive and they advised we can't exchange as it is more expensive. Where do we stand as we don't want to to take our old car back. We want the car we bought.