2007 Mercedes-Benz C vs. 2003 Opel Signum
To start off, 2007 Mercedes-Benz C 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 2,958 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (175 HP @ 4000 RPM) has 55 more horse power than 2007 Mercedes-Benz C. (120 HP @ 4200 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 2007 Mercedes-Benz C. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 115 kg more than 2007 Mercedes-Benz C. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Mercedes-Benz C is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2007 Mercedes-Benz C. However, in wet, icy, snow, or gravel driving conditions, 2003 Opel Signum, being front wheel drive (FWD), will offer much better control with better grip. 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 Opel Signum (371 Nm @ 1900 RPM) has 101 more torque (in Nm) than 2007 Mercedes-Benz C. (270 Nm @ 1600 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2007 Mercedes-Benz C.
Compare all specifications:
| 2007 Mercedes-Benz C | 2003 Opel Signum | |
| Make | Mercedes-Benz | Opel |
| Model | C | Signum |
| Year Released | 2007 | 2003 |
| Body Type | Station Wagon | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2148 cc | 2958 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 120 HP | 175 HP |
| Engine RPM | 4200 RPM | 4000 RPM |
| Torque | 270 Nm | 371 Nm |
| Torque RPM | 1600 RPM | 1900 RPM |
| Engine Bore Size | 88 mm | 87.5 mm |
| Engine Stroke Size | 88.3 mm | 82 mm |
| Fuel Type | Diesel | Diesel |
| Top Speed | 202 km/hour | 221 km/hour |
| Acceleration 0-100mph | 12.2 seconds | 9.4 seconds |
| Drive Type | Rear | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1555 kg | 1670 kg |
| Vehicle Length | 4550 mm | 4640 mm |
| Vehicle Width | 1730 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1470 mm |
| Wheelbase Size | 2720 mm | 2700 mm |
| Fuel Consumption Overall | 7 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 62 L | 60 L |
