1999 BMW 323 vs. 2003 Opel Signum
To start off, 2003 Opel Signum is newer by 4 year(s). Which means there will be less support and parts availability for 1999 BMW 323. In addition, the cost of maintenance, including insurance, on 1999 BMW 323 would be higher. At 2,494 cc (6 cylinders), 1999 BMW 323 is equipped with a bigger engine. In terms of performance, 1999 BMW 323 (170 HP @ 5500 RPM) has 26 more horse power than 2003 Opel Signum. (144 HP @ 6000 RPM). In normal driving conditions, 1999 BMW 323 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 229 kg more than 1999 BMW 323.
Because 1999 BMW 323 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 1999 BMW 323. 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, 1999 BMW 323 (245 Nm @ 3500 RPM) has 5 more torque (in Nm) than 2003 Opel Signum. (240 Nm @ 3800 RPM). This means 1999 BMW 323 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
Compare all specifications:
| 1999 BMW 323 | 2003 Opel Signum | |
| Make | BMW | Opel |
| Model | 323 | Signum |
| Year Released | 1999 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 2198 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 170 HP | 144 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 245 Nm | 240 Nm |
| Torque RPM | 3500 RPM | 3800 RPM |
| Engine Compression Ratio | 10.5:1 | 12.0:1 |
| Drive Type | Rear | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1457 kg | 1686 kg |
| Vehicle Length | 4480 mm | 4640 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2640 mm |
| Fuel Tank Capacity | 63 L | 58 L |
