My understanding is that most movies use replica's of expensive car like XK150's when they have a seen of them wrecking a car. Or even sometimes old cars taken from scrapyards that they do a quickie repair job on to make them look serviceable before they wreck them again.
I did hear of one movie shoot in Vancouver, BC that used a real Mini Countryman, it got thoroughly abused throughout, then later they tried selling it and had lots of trouble because no one wanted to touch it.