2003 Opel Signum vs. 2005 Pontiac Aztek
To start off, 2005 Pontiac Aztek is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 3,392 cc (6 cylinders), 2005 Pontiac Aztek is equipped with a bigger engine. In terms of performance, 2005 Pontiac Aztek (176 HP @ 5200 RPM) has 3 more horse power than 2003 Opel Signum. (173 HP @ 5600 RPM) In normal driving conditions, 2005 Pontiac Aztek should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 Pontiac Aztek weights approximately 335 kg more than 2003 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Pontiac Aztek is four wheel drive (4WD), it will have significant more traction and grip than 2003 Opel Signum. In wet, icy, snow, or gravel driving conditions, 2005 Pontiac Aztek 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, 2005 Pontiac Aztek (298 Nm @ 4000 RPM) has 18 more torque (in Nm) than 2003 Opel Signum. (280 Nm @ 2500 RPM). This means 2005 Pontiac Aztek will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
Compare all specifications:
| 2003 Opel Signum | 2005 Pontiac Aztek | |
| Make | Opel | Pontiac |
| Model | Signum | Aztek |
| Year Released | 2003 | 2005 |
| Body Type | Hatchback | Crossover |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 3392 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 176 HP |
| Engine RPM | 5600 RPM | 5200 RPM |
| Torque | 280 Nm | 298 Nm |
| Torque RPM | 2500 RPM | 4000 RPM |
| Engine Bore Size | 86 mm | 92 mm |
| Engine Stroke Size | 86 mm | 84 mm |
| Engine Compression Ratio | 9.5:1 | 8.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1495 kg | 1830 kg |
| Vehicle Length | 4640 mm | 4630 mm |
| Vehicle Width | 1800 mm | 1880 mm |
| Vehicle Height | 1470 mm | 1700 mm |
| Wheelbase Size | 2720 mm | 2760 mm |
| Fuel Tank Capacity | 58 L | 69 L |
