Yes I'm very happy. Happy with my GS too, not getting the promised 30mpg (urban) though ;)
No, for that fuel economy, only my IS200 SportCross will do. Lol.
True, but I've fallen in love with the 0-60 in 5.9 while having a lovely heated toosh lol
1. Lexus have never announced anything officially - but the head tech who replaced my engine said "7yrs 112k" - I have heard others say that their dealer has said it has been changed to 5 years - but I was definitely quoted the above a few months ago.
2. 7years/112k whatever comes first
3. How long is a piece of string unfortunately - check your coolant bottle and if you find dried engine coolant around the engine fan area - I'd be calling into your local dealer to get it checked out. This is what I done when they replaced the engine although my car was under lexus warranty.
4. It's a design fault, but impossible to say
5. Preventative measures - not really but use low ash oil and keep the egr clean