1998 Opel Signum vs. 2013 BMW 6 series
To start off, 2013 BMW 6 series is newer by 15 year(s). Which means there will be less support and parts availability for 1998 Opel Signum. In addition, the cost of maintenance, including insurance, on 1998 Opel Signum would be higher. At 2,979 cc (6 cylinders), 2013 BMW 6 series is equipped with a bigger engine. In terms of performance, 2013 BMW 6 series (311 HP @ 6000 RPM) has 138 more horse power than 1998 Opel Signum. (173 HP @ 5500 RPM) In normal driving conditions, 2013 BMW 6 series should accelerate faster than 1998 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 6 series weights approximately 249 kg more than 1998 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 BMW 6 series 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 2013 BMW 6 series. However, in wet, icy, snow, or gravel driving conditions, 1998 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, 2013 BMW 6 series (447 Nm @ 4500 RPM) has 262 more torque (in Nm) than 1998 Opel Signum. (185 Nm @ 2500 RPM). This means 2013 BMW 6 series will have an easier job in driving up hills or pulling heavy equipment than 1998 Opel Signum. 2013 BMW 6 series has automatic transmission and 1998 Opel Signum has manual transmission. 1998 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2013 BMW 6 series will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1998 Opel Signum | 2013 BMW 6 series | |
| Make | Opel | BMW |
| Model | Signum | 6 series |
| Year Released | 1998 | 2013 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 2979 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 311 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 185 Nm | 447 Nm |
| Torque RPM | 2500 RPM | 4500 RPM |
| Engine Bore Size | 86 mm | 84 mm |
| Engine Stroke Size | 86 mm | 89 mm |
| Engine Compression Ratio | 9.5:1 | 10.2 :1 |
| Top Speed | 220 km/hour | 250 km/hour |
| Drive Type | Front | Rear |
| Transmission Type | Manual | 8-speed automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1566 kg | 1815 kg |
| Vehicle Length | 4640 mm | 4897 mm |
| Vehicle Width | 1800 mm | 1895 mm |
| Vehicle Height | 1470 mm | 1369 mm |
| Wheelbase Size | 2840 mm | 2856 mm |
| Fuel Tank Capacity | 60 L | 70 L |
