I bought a silver '05 G6 STD sedan 18 months ago and haven't had a problem with it yet. The fuel economy is great, even though I only have the 4- speed automatic. The car drives and handles great-both in the city here in Washington, DC and on the highway on my way out to the beach or to Pittsburgh. When I first bought it, I couldn't stop staring at it. I still get compliments on the car's styling. If you're looking for something that looks great, is practical and economical, you've got to test drive this car. One note: I should have gotten the XM radio option. I had to retrofit an aftermarket unit, which doesn't look as clean as if I would have just gotten the optional radio.
The driver's information center, the 6- disc in-dash CD player, the sunroof, the ergonomic front seats (don't get the base seats- they're terrible), the durability of the interior plastics (people say they look low-rent, but they'll hold up a lot longer than the plastics in lesser cars) and the price
A lot of the improvements have already been addressed. There's now a 250 HP V6 with a 6-speed auto trans. The aluminum wheels for the '05 have small indents that are a PIA to clean, not so for the new wheels. The only big thing to fix would be to have a wider pass-thru between the trunk and backseat