[doughboy]

Originally Posted by deccauk

Not quite.

In an absent minded moment when rolling downhill in neutral at speed (about 50mph), I pushed the stick forward into reverse instead of pulling back into drive. The gearbox made a horrible rattling noise, the engine shut down and a very serious warning message appeared on the idrive indicating gearbox malfunction - consult a BMW dealer urgently.

I truly thought that I might have destroyed the gearbox, but after calming down, I restarted the engine and 2000 miles later, haven't noticed any adverse effects.

Anyone else done this?

Foolproof like I said.