2008 BMW 523 vs. 2003 Opel Signum
To start off, 2008 BMW 523 is newer by 5 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, both vehicles can yield 175 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 75 kg more than 2008 BMW 523.
Because 2008 BMW 523 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 2008 BMW 523. 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 (370 Nm @ 1900 RPM) has 140 more torque (in Nm) than 2008 BMW 523. (230 Nm @ 3500 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 523.
Compare all specifications:
| 2008 BMW 523 | 2003 Opel Signum | |
| Make | BMW | Opel |
| Model | 523 | Signum |
| Year Released | 2008 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 175 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 230 Nm | 370 Nm |
| Torque RPM | 3500 RPM | 1900 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1500 kg | 1575 kg |
| Vehicle Length | 4850 mm | 4640 mm |
| Vehicle Width | 1470 mm | 1800 mm |
| Vehicle Height | 1850 mm | 1470 mm |
| Wheelbase Size | 2890 mm | 2840 mm |
