Hi, My recent purchase a 2010 California with 4000 miles on the clock is a very nice car but I find that if I am in, say, 3rd gear at around 3000 rpm it feels very hesitant. An example could be in a 30 mph limit with the engine at 3000 it does not feel nearly as smooth as my manual 430 in the same situation. Also, sometimes, when changing from 1st to 2nd under quick acceleration there is quite a bang from the exhaust. It reminds me of my first 911 bought back in 1978 which quite often acted as a flame thrower! At night the whole road behind the car would light up: quite entertaining! Thank you!