I'm the owner of a Lexus gs250 year 2012 85k miles.
So far absolutely bulletproof.
Power and acceleration might be an issue for some drivers though.
When driven calmly below 3000 revs it's perfectly adequate but far from quick.
Basically it's a car that needs revs to get moving swiftly.
What is misses most is healthy torque.
0 - 62 mph 8.6 is not slow