1976 BMW 630 vs. 2006 Opel Signum
To start off, 2006 Opel Signum is newer by 30 year(s). Which means there will be less support and parts availability for 1976 BMW 630. In addition, the cost of maintenance, including insurance, on 1976 BMW 630 would be higher. At 2,986 cc (6 cylinders), 1976 BMW 630 is equipped with a bigger engine. In terms of performance, 1976 BMW 630 (173 HP @ 5500 RPM) has 20 more horse power than 2006 Opel Signum. (153 HP @ 5600 RPM). In normal driving conditions, 1976 BMW 630 should accelerate faster than 2006 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Signum weights approximately 77 kg more than 1976 BMW 630.
Because 1976 BMW 630 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 1976 BMW 630. However, in wet, icy, snow, or gravel driving conditions, 2006 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, 1976 BMW 630 (251 Nm @ 4500 RPM) has 31 more torque (in Nm) than 2006 Opel Signum. (220 Nm @ 3800 RPM). This means 1976 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Signum.
Compare all specifications:
| 1976 BMW 630 | 2006 Opel Signum | |
| Make | BMW | Opel |
| Model | 630 | Signum |
| Year Released | 1976 | 2006 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 2198 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 173 HP | 153 HP |
| Engine RPM | 5500 RPM | 5600 RPM |
| Torque | 251 Nm | 220 Nm |
| Torque RPM | 4500 RPM | 3800 RPM |
| Engine Bore Size | 89 mm | 86 mm |
| Engine Stroke Size | 80 mm | 94.6 mm |
| Engine Compression Ratio | 8.0:1 | 12.0:1 |
| Drive Type | Rear | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1458 kg | 1535 kg |
| Vehicle Length | 4760 mm | 4640 mm |
| Vehicle Width | 1760 mm | 1800 mm |
| Vehicle Height | 1390 mm | 1470 mm |
| Wheelbase Size | 2630 mm | 2840 mm |
