2003 Opel Signum vs. 2010 BMW 120
To start off, 2010 BMW 120 is newer by 7 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 2,198 cc (4 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2010 BMW 120 (168 HP @ 6700 RPM) has 24 more horse power than 2003 Opel Signum. (144 HP @ 6000 RPM) In normal driving conditions, 2010 BMW 120 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 161 kg more than 2010 BMW 120.
Because 2010 BMW 120 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 2010 BMW 120. 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 (240 Nm @ 3800 RPM) has 30 more torque (in Nm) than 2010 BMW 120. (210 Nm @ 4250 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2010 BMW 120.
Compare all specifications:
| 2003 Opel Signum | 2010 BMW 120 | |
| Make | Opel | BMW |
| Model | Signum | 120 |
| Year Released | 2003 | 2010 |
| Engine Position | Front | Front |
| Engine Size | 2198 cc | 1995 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 144 HP | 168 HP |
| Engine RPM | 6000 RPM | 6700 RPM |
| Torque | 240 Nm | 210 Nm |
| Torque RPM | 3800 RPM | 4250 RPM |
| Engine Bore Size | 86 mm | 84.1 mm |
| Engine Stroke Size | 94.6 mm | 90 mm |
| Engine Compression Ratio | 12.0:1 | 12.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1686 kg | 1525 kg |
| Vehicle Length | 4640 mm | 4370 mm |
| Vehicle Width | 1800 mm | 1910 mm |
| Vehicle Height | 1470 mm | 1760 mm |
| Wheelbase Size | 2640 mm | 2670 mm |
| Fuel Consumption Overall | 5.2 L/100km | 6.8 L/100km |
| Fuel Tank Capacity | 58 L | 53 L |
