The IS250 all wheel drive has been flawless in 6100 miles (to date) in fit and finish.
My real world economy has been 33 mpg hwy (not the computer figure, an optimistic 34.5-35)which is better than expected and slightly over 20 in city driving (not heavy traffic), also better than expected
The base sound system is very good. The controls on the audio system are very good. The Nav systemm,while not perfect, has been able to find a destination accuartely in an unfamiliar location