We recently asked a selection of manufacturers an apparently simple question: what is the average age of the people who buy your cars? As several of them were quick to tell us, it isn’t actually a simple question at all.

Some of them just don’t know. Others, particularly the larger ones, pointed out that there are different answers for different models. And of course the people who buy cars are not necessarily the ones who drive them, as in the case of parents helping out their children as

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