This is the new Audi RS 4 Avant: one of the fastest ways that you can scare the whole family - even the dog - together. A 2.9-litre twin-turbo V6 and a Quattro four wheel drive system should see it crack the 0-62mph sprint in four seconds - yet it's got room for five and a big boot. Is it all the car you'll ever need? Find out as I show you the top 10 things you need to know about it. Subscribe to
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