Nothing at all.
A fantastic, reliable, smooth, comfortable, quiet car.
The V6 power plant is so smooth/sophisticated.
My car now has 260000 ks on it without a rattle or squeak anywhere, and the paintwork is still like new, other than the odd scratch here and there.
The interior trim almost perfect with the exception of some leather fade.
I recently drove a 2006 Holden Commodore Omega, and once I got back in my Camry, it felt so much smoother. I believe this car is still streets ahead of what Australian made Falcon and Commodore offer.
I own a Camry and agree; I drove a Falcon and it seems a lot less refined. But I have to mention that the Camry/Vienta is Australian made.