1990 BMW 730 vs. 2004 Opel Signum
To start off, 2004 Opel Signum is newer by 14 year(s). Which means there will be less support and parts availability for 1990 BMW 730. In addition, the cost of maintenance, including insurance, on 1990 BMW 730 would be higher. At 3,175 cc (6 cylinders), 2004 Opel Signum is equipped with a bigger engine. In terms of performance, 2004 Opel Signum (208 HP @ 6200 RPM) has 27 more horse power than 1990 BMW 730. (181 HP @ 5800 RPM) In normal driving conditions, 2004 Opel Signum should accelerate faster than 1990 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 1990 BMW 730 weights approximately 5 kg more than 2004 Opel Signum.
Because 1990 BMW 730 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 1990 BMW 730. However, in wet, icy, snow, or gravel driving conditions, 2004 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, 2004 Opel Signum (300 Nm @ 4000 RPM) has 40 more torque (in Nm) than 1990 BMW 730. (260 Nm @ 4000 RPM). This means 2004 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1990 BMW 730.
Compare all specifications:
| 1990 BMW 730 | 2004 Opel Signum | |
| Make | BMW | Opel |
| Model | 730 | Signum |
| Year Released | 1990 | 2004 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 3175 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 181 HP | 208 HP |
| Engine RPM | 5800 RPM | 6200 RPM |
| Torque | 260 Nm | 300 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 89 mm | 87.5 mm |
| Engine Stroke Size | 80 mm | 88 mm |
| Engine Compression Ratio | 9.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1600 kg | 1595 kg |
| Vehicle Length | 4920 mm | 4640 mm |
| Vehicle Width | 1850 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2840 mm | 2740 mm |
| Fuel Tank Capacity | 90 L | 52 L |
