1990 BMW 730 vs. 2003 Opel Signum
To start off, 2003 Opel Signum is newer by 13 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 2,986 cc (6 cylinders), 1990 BMW 730 is equipped with a bigger engine. In terms of performance, 1990 BMW 730 (181 HP @ 5800 RPM) has 7 more horse power than 2003 Opel Signum. (174 HP @ 4000 RPM). In normal driving conditions, 1990 BMW 730 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 95 kg more than 1990 BMW 730.
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, 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 110 more torque (in Nm) than 1990 BMW 730. (260 Nm @ 4000 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1990 BMW 730. 2003 Opel Signum has automatic transmission and 1990 BMW 730 has manual transmission. 1990 BMW 730 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1990 BMW 730 | 2003 Opel Signum | |
| Make | BMW | Opel |
| Model | 730 | Signum |
| Year Released | 1990 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 181 HP | 174 HP |
| Engine RPM | 5800 RPM | 4000 RPM |
| Torque | 260 Nm | 370 Nm |
| Torque RPM | 4000 RPM | 1900 RPM |
| Engine Bore Size | 89 mm | 87.6 mm |
| Engine Stroke Size | 80 mm | 82 mm |
| Engine Compression Ratio | 9.0:1 | 18.5:1 |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1600 kg | 1695 kg |
| Vehicle Length | 4920 mm | 4640 mm |
| Vehicle Width | 1850 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2840 mm | 2710 mm |
| Fuel Tank Capacity | 90 L | 60 L |
