Hey there, I have 2010 (10 plate) one for 2,5 years. It was 78k miles and now it has 118k miles. It is for sale now as I have upgraded to a 2016 (66 plate).
The problems I have had during the ownership was:
Anti-roller bar rubber protection gone, hence changed both sides, costed 160 in my local garage.
Then brake pads and tyres only.
I service my car at Lexus.
No problems with air suspension, super option in my opinion.