Thanks for replies. Cost is about $1200 for warranty, and each "incident" has $500 excess, and for next 6 months (until 150K Km) max $4K payout, then drops to max $2.5K. So, would need to have 1 problem greater than $1700, 2 more than $2,200, 3 at $2700, etc. So, still debating usefullness / cost effectiveness. 
. Comments appreciated.
Rubbish one.
I purchased our Touareg insurance wty from Tristram (note, didnt buy the car from them). RRP $2800, i paid $2200 by bending their arm. 3 years, $10k max claim, factory service intervals (ie 15k not 5k servcies), $100 excess (or was it $150, but certainly no more), and covers 99% of things including stereo etc.
CCS have a similar one, slightly cheaper but only 2 years.
I can recommend both. Both CCS and Tristram have stood behind it and made it work in terms of claims elgibility and also paperwork. Essentually i turn up, pay the excess, thats it. In return i always service with them.
I can also strongly recommend a mechancial warranty on the euro cars full stop. In 10 year of taking them out, i've always made on it, sometimes by a factor of 10x plus returns (my A4 did a turbo, manifold and a number of small but expensive things).
