2005 Mercury Mariner vs. 2003 Pontiac Grand Prix
To start off, 2005 Mercury Mariner is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Pontiac Grand Prix. In addition, the cost of maintenance, including insurance, on 2003 Pontiac Grand Prix would be higher. At 3,130 cc (6 cylinders), 2003 Pontiac Grand Prix is equipped with a bigger engine. In terms of performance, 2003 Pontiac Grand Prix (174 HP @ 5200 RPM) has 21 more horse power than 2005 Mercury Mariner. (153 HP @ 5800 RPM) In normal driving conditions, 2003 Pontiac Grand Prix should accelerate faster than 2005 Mercury Mariner. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercury Mariner weights approximately 44 kg more than 2003 Pontiac Grand Prix.
Because 2005 Mercury Mariner is four wheel drive (4WD), it will have significant more traction and grip than 2003 Pontiac Grand Prix. In wet, icy, snow, or gravel driving conditions, 2005 Mercury Mariner will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2003 Pontiac Grand Prix (264 Nm @ 4000 RPM) has 58 more torque (in Nm) than 2005 Mercury Mariner. (206 Nm @ 4250 RPM). This means 2003 Pontiac Grand Prix will have an easier job in driving up hills or pulling heavy equipment than 2005 Mercury Mariner.
Compare all specifications:
| 2005 Mercury Mariner | 2003 Pontiac Grand Prix | |
| Make | Mercury | Pontiac |
| Model | Mariner | Grand Prix |
| Year Released | 2005 | 2003 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2261 cc | 3130 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 153 HP | 174 HP |
| Engine RPM | 5800 RPM | 5200 RPM |
| Torque | 206 Nm | 264 Nm |
| Torque RPM | 4250 RPM | 4000 RPM |
| Engine Bore Size | 87 mm | 89 mm |
| Engine Stroke Size | 94 mm | 84 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1579 kg | 1535 kg |
| Vehicle Length | 4430 mm | 5000 mm |
| Vehicle Width | 1790 mm | 1850 mm |
| Vehicle Height | 1730 mm | 1400 mm |
| Wheelbase Size | 2630 mm | 3160 mm |
| Fuel Tank Capacity | 62 L | 66 L |
