1998 BMW 729 vs. 2004 Opel Signum
To start off, 2004 Opel Signum is newer by 6 year(s). Which means there will be less support and parts availability for 1998 BMW 729. In addition, the cost of maintenance, including insurance, on 1998 BMW 729 would be higher. At 2,926 cc (6 cylinders), 1998 BMW 729 is equipped with a bigger engine. In terms of performance, 1998 BMW 729 (181 HP @ 4000 RPM) has 8 more horse power than 2004 Opel Signum. (173 HP @ 5500 RPM). In normal driving conditions, 1998 BMW 729 should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 1998 BMW 729 weights approximately 270 kg more than 2004 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1998 BMW 729 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 1998 BMW 729. 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, 1998 BMW 729 (410 Nm @ 2000 RPM) has 145 more torque (in Nm) than 2004 Opel Signum. (265 Nm @ 2500 RPM). This means 1998 BMW 729 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum. 1998 BMW 729 has automatic transmission and 2004 Opel Signum has manual transmission. 2004 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1998 BMW 729 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1998 BMW 729 | 2004 Opel Signum | |
| Make | BMW | Opel |
| Model | 729 | Signum |
| Year Released | 1998 | 2004 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2926 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 181 HP | 173 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 410 Nm | 265 Nm |
| Torque RPM | 2000 RPM | 2500 RPM |
| Engine Bore Size | 84 mm | 86 mm |
| Engine Stroke Size | 88 mm | 86 mm |
| Engine Compression Ratio | 18.0:1 | 9.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1830 kg | 1560 kg |
| Vehicle Length | 5130 mm | 4640 mm |
| Vehicle Width | 1870 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2940 mm | 2840 mm |
