The heart of the Maserati GranTurismo convertible is a powerful V8 engine of 4.7 liters and delivers hp at 7,000 rpm with maximum torque of 361 Nm at 4.750 rpm 433. The bank cylinder engine is driven at an angle of 90 ° and control valve designed twin overhead camshafts, chain driven and the bank with four valves per cylinder controlled by hydraulic tappets. The camshafts are in low suction pressure continuous variable valve timing synchronization, the process of opening the valve for optimum performance with only 0.15 seconds, to increase the responsiveness of the engine changes. The design of the distribution chain is also a very reliable and quiet engine, with very low friction for reduced power consumption and the possibility for the exact time is given an excellent presentation of the cylinder reflects excellence.

Maserati GranTurismo convertible drilled brake system has two circuits with four ventilated discs. The front axle mount aluminum calipers UNIBLOC are more resistant to deformation than the traditional two-piece brake calipers. Each has six-piston front caliper with two different diameters and distribution disks measuring 1.26 inches by 14.2in rear axle with four-piston aluminum calipers with different diameters and 13 x 1.1-inch disks in molten iron. The ABS system is improved by a better distribution system, electronic brake force to the braking effect between front and rear wheels. The Maserati GranTurismo delivers impressive in its braking capacity and its resistance to fade under heavy use: the car has a braking distance of just 114 feet from 60 mph to 0 kmh with an unusually high average rate of 1.24g deceleration.

To improve the boot up of the transmission using a Hill Holder system designed so that the vehicle slows for a few seconds after releasing the brakes on steep slopes on the pedal, so the driver to turn off the gas pedal without the vehicle in reverse order. The Maserati GranTurismo convertible is equipped with a parking brake, comfortable and simple electronics, which is automatically activated when the car in the parking lot and exits. The car also has brake assist for the first time in a Maserati. Panic, by analyzing a combination of parameters such as pressure gradient booster, wheel speed and the lighting of the third stop light recognized. The system checks the parameters and takes the lead on the activation of the braking system to ensure full power, the braking force is used in critical condition.