2007 Mercedes-Benz G vs. 2003 Opel Signum
To start off, 2007 Mercedes-Benz G is newer by 4 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 3,175 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (209 HP @ 6200 RPM) has 55 more horse power than 2007 Mercedes-Benz G. (154 HP @ 3800 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 2007 Mercedes-Benz G. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercedes-Benz G weights approximately 145 kg more than 2003 Opel Signum.
Because 2007 Mercedes-Benz G 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, 2007 Mercedes-Benz G 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, 2007 Mercedes-Benz G (401 Nm @ 1800 RPM) has 101 more torque (in Nm) than 2003 Opel Signum. (300 Nm @ 4000 RPM). This means 2007 Mercedes-Benz G will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
Compare all specifications:
| 2007 Mercedes-Benz G | 2003 Opel Signum | |
| Make | Mercedes-Benz | Opel |
| Model | G | Signum |
| Year Released | 2007 | 2003 |
| Body Type | SUV | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2688 cc | 3175 cc |
| Engine Cylinders | 5 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 154 HP | 209 HP |
| Engine RPM | 3800 RPM | 6200 RPM |
| Torque | 401 Nm | 300 Nm |
| Torque RPM | 1800 RPM | 4000 RPM |
| Engine Bore Size | 88 mm | 87.5 mm |
| Engine Stroke Size | 88.4 mm | 88 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1690 kg | 1545 kg |
| Vehicle Length | 4670 mm | 4640 mm |
| Vehicle Width | 1870 mm | 1800 mm |
| Vehicle Height | 1940 mm | 1470 mm |
| Wheelbase Size | 2860 mm | 2840 mm |
| Fuel Tank Capacity | 96 L | 60 L |
