07 G6V6 - I'm getting 23.3 on mine at the moment. The car has 98,000 miles on it so far. Knock on wood - the only issues I've had with it so far is the famous 'intermediate steering shaft', bad windshield wiper transmission, driver side wheel bearing and normal brake replacement. Passenger side wheel bearing is just starting to go. I'll have to replace that this weekend I think.