Engineered to deliver rapid acceleration, the G35's 306-horsepower 3.5-liter V6 blasts the sedan to 60 mph in less than six seconds, and my 17.4 mpg average reflects a heavy foot. Throttle response is uneven, with a slight delay as the car gets off the line and then a sudden, frequently unintended rush of speed. If this occurs in a curve, the wheels begin to spin, the tail begins to slide, and the stability control is roused to stop the party. The five-speed automatic includes a manual shift gate and magnesium paddle shifters mounted to the steering wheel, as well as adaptive software. Choose the standard manual gearbox if you wish to avoid the automatic's sometimes unpredictable nature.