For enhanced safety, the front and rear seat shoulder belts of the Maserati GranTurismo have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Aston Martin DB9 doesn’t offer pretensioners for the rear seat belts.
For enhanced safety, the front seat shoulder belts of the Maserati GranTurismo are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Aston Martin DB9 doesn’t offer height-adjustable seat belts.
The GranTurismo has standard head airbag curtains which act as a forgiving barrier between the driver and front passenger's upper bodies and the window and pillars. Combined with high-strength steel door beams and lower side airbags this system increases head protection in broadside collisions. The DB9 doesn't offer side airbag protection for the head.
The Maserati GranTurismo has Daytime Running Lights to help keep it more visible under all conditions. Canadian government studies show that driving with lights during the day reduces accidents by 11% by making vehicles more conspicuous. The DB9 doesn’t offer Daytime Running Lights.
Both the GranTurismo and the DB9 have standard driver and passenger frontal airbags, front side-impact airbags, four-wheel antilock brakes, traction control and electronic stability systems to prevent skidding.
The GranTurismo comes with a full 4 year/50,000 mile basic warranty, which covers the entire car and includes free 24 hour roadside assistance. The DB9’s 3 year basic warranty expires 1 year sooner.
There are almost 5 times as many Maserati dealers as there are Aston Martin dealers, which makes it much easier should you ever need service under the GranTurismo’s warranty.
On the EPA test cycle the GranTurismo MC Auto gets better fuel mileage than the DB9 (13 city/21 hwy vs. 13 city/19 hwy).
The GranTurismo has 2.1 gallons more fuel capacity than the DB9 (22.7 vs. 20.6 gallons), for longer range between fill-ups.
For better traction, the GranTurismo has larger front tires than the DB9 (F:255/35R20 & R:295/35R20 vs. F:245/35R20 & R:295/30R20).
The GranTurismo has standard front and rear gas-charged shocks for better control over choppy roads. The DB9’s suspension doesn’t offer gas-charged shocks.
For a smoother ride and more stable handling, the GranTurismo’s wheelbase is 7.9 inches longer than on the DB9 (115.8 inches vs. 107.9 inches).
For better handling and stability, the track (width between the wheels) on the GranTurismo is .4 inches wider in the front and 1.1 inches wider in the rear than on the DB9.
The GranTurismo goes through Road & Track’s slalom 5.5 MPH faster than the DB9 Coupe (71 vs. 65.5 MPH).
For better maneuverability, the GranTurismo’s turning circle is 2.6 feet tighter than the DB9’s (35.1 feet vs. 37.7 feet).
The design of the Maserati GranTurismo amounts to more than styling. The GranTurismo has an aerodynamic coefficient of drag of .33 Cd. That is lower than the DB9 (.35). A more efficient exterior helps the GranTurismo go faster and keeps the interior quieter. It also helps the GranTurismo get better fuel mileage.
Because it has more passenger and cargo room, the GranTurismo is rated a Subcompact car by the EPA, while the DB9 is rated a Minicompact.
The GranTurismo has 18 cubic feet more passenger volume than the DB9 (86 vs. 68).
The GranTurismo has 2.3 inches more front headroom, 4.7 inches more rear headroom, 5.2 inches more rear legroom and 3.3 inches more rear shoulder room than the DB9.
The GranTurismo has a much larger trunk than the DB9 Coupe (9.2 vs. 6.1 cubic feet).