2009 Mercedes-Benz C vs. 2007 Opel Signum
To start off, 2009 Mercedes-Benz C is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Opel Signum. In addition, the cost of maintenance, including insurance, on 2007 Opel Signum would be higher. At 2,958 cc (6 cylinders), 2007 Opel Signum is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz C (181 HP @ 5500 RPM) has 6 more horse power than 2007 Opel Signum. (175 HP @ 4000 RPM). In normal driving conditions, 2009 Mercedes-Benz C should accelerate faster than 2007 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Signum weights approximately 445 kg more than 2009 Mercedes-Benz C.
Because 2009 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 2009 Mercedes-Benz C. However, in wet, icy, snow, or gravel driving conditions, 2007 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, 2007 Opel Signum (370 Nm @ 1900 RPM) has 130 more torque (in Nm) than 2009 Mercedes-Benz C. (240 Nm @ 2800 RPM). This means 2007 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2009 Mercedes-Benz C. 2009 Mercedes-Benz C has automatic transmission and 2007 Opel Signum has manual transmission. 2007 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Mercedes-Benz C will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Mercedes-Benz C | 2007 Opel Signum | |
| Make | Mercedes-Benz | Opel |
| Model | C | Signum |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 2958 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 181 HP | 175 HP |
| Engine RPM | 5500 RPM | 4000 RPM |
| Torque | 240 Nm | 370 Nm |
| Torque RPM | 2800 RPM | 1900 RPM |
| Engine Bore Size | 82.1 mm | 87.5 mm |
| Engine Stroke Size | 85 mm | 82 mm |
| Engine Compression Ratio | 8.5:1 | 18.5:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1225 kg | 1670 kg |
| Vehicle Length | 4590 mm | 4640 mm |
| Vehicle Width | 1450 mm | 1800 mm |
| Vehicle Height | 1780 mm | 1470 mm |
| Wheelbase Size | 2770 mm | 2840 mm |
| Fuel Consumption Overall | 14.8 L/100km | 7.4 L/100km |
| Fuel Tank Capacity | 62 L | 60 L |
