Golf Mk5 BMN GT Sport - Engine revs to max for 3 secs then stops. Smoke and stuff ha!

[Pete N]

ok - so a funny thing happened on the on-ramp to the Sydney M4.

I accelerate My Mk5 GT Sport (125kw with DPF) down the on-ramp (~100kph), and changed gears 4th to 5th, and all of a sudden the car just rev's its guts out for 3 seconds and then loads of smoke comes out from under the front of the car !

When the car revved, there was no extra power to the drive-train (I assumed clutch slipped - hence smoke..)

Scared the crap out of me. I released the clutch slowly (in 5th) and accelerated a little again, and it did the same thing again, red-lined for 3 seconds, and more smoke.

I stopped on the hard shoulder got out in the rain and got it NRMA'd home.

- The tow truck driver was able to drive it onto the truck fine, so I assume engine and gearbox are fine
- A VAG scan showed NO error codes,
- I was also just told by a mechanic that the gearbox is fine.
- it happened a 3rd time after drop off to a mechanic, he reversed the car into a spot, then when revved the car, it did the 3 second red-line again. Seems fine on idle.

I have googled a fair bit and gone between injectors (probably not) and clutch (told its fine) and am more than confused. I even watch a whole clutch replacement video from a solo operator in the UK, because it was so well done !

Any ideas ? I am a little nervous to drive it..

Thanks