Last year, April I think it was when there was lots of serious flooding up north, we were out as a family in dads A4 Avant TDi Quattro.
Went through loads of what I'd call "big puddles" but other would call flooding. Came to one a bit deeper than the others. This is a lane that is one car width with hedges either side so there's no turning round. Dad decides to try it and in we go.... car sounds really ropey while it's in it but gets through to the other side..... and then dies. Just out of the water. Won't start again.
Pop the bonnet and the plastic engine cover is soaked, but that doesn't matter it's a diesel so no spark plugs etc! Then I saw where the air intake is

. Could they have put it any lower!
After 5/10 mins the car decided to start and drove home, belching thick black smoke and driving like a dog.
Next morning it really didn't want to start and more black smoke so dad drives it to work and gives the keys to the fleet manager who has the garage tow it.
Bent rods, bent valves etc etc.

New engine needed

. Audi main stealer labour rate + brand new engine from Audi = written off. Dad phoned the insurance company the day after work got the payment enquiring to buy it (we'd do the engine change) and "it's already been sold".
Writing off a £27k car.... without a scratch on it! And that's the record £££ of damage anyone there's done to a company car. Still, got a LCI M-Sport 5 Series Touring now

.