Please help with advice or feedback......

[Smooth A6]

So I'm driving down the interstate here in the States in South Jersey cruising around 75 miles an hour in my 2008 A6. All of a sudden my car seems to lose power and the engine starts to shake and sputter, then cuts off. Lucky I was able to immediately work my way from the far left lane to the shoulder and out of harm's way. I have no idea how I was able to do that without being rear ended or causing an accident.
Anyway, I had the car towed to the local Audi dealer and I just received the call from the Service Manager. They found that there was low compression and in investigating it, found a shattered spark plug. The spark plug was shattered by a broken valve. The engine is blown!
The strange thing is, I did not receive any prior notice or warnings that there was a potential catastrophic problem. No check engine light. No strange noises (ticking or knocking). No previous loss of power. No nothing. The car has 48,000 miles on it and it has been serviced by this dealership almost obsessively since purchased as a CPO. Needless to say that the engine is being replaced by Audi under warranty. I'm told that they are replacing it with a new engine.
The question that goes out to the great members of the board is what concerns should I have withan engine replacement? What should I be looking for? What cautions should I take if any?

[Guest 2]

As Audi are doing the engine swap I wouldn't be worrying to be honest.

In the UK at least, you get a 2 year unlimited mileage parts and labour guarantee on any genuine part so I wouldn't be worried as you will always have better comeback should anything go wrong compared to a non-audi garage doing the work.

Welcome to VWAF

[size12]

Just run the new motor in as you would on a new car and enjoy.
Dropping a valve would have been an instant engine death so very unlikely to give any warnings/faults until the dash lot up like a Christmas tree!

[Smooth A6]

Just run the new motor in as you would on a new car and enjoy.
Dropping a valve would have been an instant engine death so very unlikely to give any warnings/faults until the dash lot up like a Christmas tree!

And that it did!

[MFGF]

Hope the dealer in question isn't Jack Daniels! I've heard some rather worrying things about them from a friend with an A4 in New Jersey. NJ is a big place, so hopefully it's somewhere entirely different...

Good luck!!

MF.