Hum, I thought all '10s but fleet cars had the A6.
Anyway, the A6 does help a little due to better gearing, but the A4 is IMO a smoother tranny. The I4 is underpowered for such a size car and that is just the nature of 169 HP in a 3700 pound car.
Hum, I thought all '10s but fleet cars had the A6.Only the LS got the 4 speed. 1LT, 2LT, LTZ got the 6 speed.