Passenger & boot space
How it copes with people and clutter
Front space
Although the Audi A6 has slightly less front leg room than the BMW 5 Series and Mercedes E-Class, that's a bit like saying that one species of elephant is smaller than another – the point is that they're all big old beasts. Besides, when it comes to head room, the A6 is one of the biggest beasts out there.
You'll find it has plenty of width for your elbows too, although tall drivers who slide the seat right back will run out of armrest on the door as it’s not quite long enough.

Seat folding and flexibility
There’s nothing of great consequence to report here. You don't get the multi-adjustable electric rear seats that are available in the A6's bigger brother, the Audi A8. You do get 40/20/40 split-folding rear seats as standard, though – and that's a feature you have to pay extra for in the BMW 5 Series.
It's a shame you don't get levers inside the boot opening to drop the rear seats because they would make the job more convenient. Instead, you have to walk round the car and open its rear doors to pop the levers at the top of its rear seatbacks.