1977 BMW 728 vs. 2003 Opel Signum
To start off, 2003 Opel Signum is newer by 26 year(s). Which means there will be less support and parts availability for 1977 BMW 728. In addition, the cost of maintenance, including insurance, on 1977 BMW 728 would be higher. At 2,958 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (175 HP @ 4000 RPM) has 5 more horse power than 1977 BMW 728. (170 HP @ 6000 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 1977 BMW 728. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 134 kg more than 1977 BMW 728. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1977 BMW 728 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 1977 BMW 728. 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 (371 Nm @ 1900 RPM) has 136 more torque (in Nm) than 1977 BMW 728. (235 Nm @ 3700 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 728.
Compare all specifications:
1977 BMW 728 | 2003 Opel Signum | |
Make | BMW | Opel |
Model | 728 | Signum |
Year Released | 1977 | 2003 |
Body Type | Sedan | Hatchback |
Engine Position | Front | Front |
Engine Size | 2788 cc | 2958 cc |
Engine Cylinders | 6 cylinders | 6 cylinders |
Engine Type | in-line | V |
Horse Power | 170 HP | 175 HP |
Engine RPM | 6000 RPM | 4000 RPM |
Torque | 235 Nm | 371 Nm |
Torque RPM | 3700 RPM | 1900 RPM |
Engine Bore Size | 86 mm | 87.5 mm |
Engine Stroke Size | 80 mm | 82 mm |
Top Speed | 193 km/hour | 221 km/hour |
Drive Type | Rear | Front |
Transmission Type | Manual | Manual |
Number of Seats | 5 seats | 5 seats |
Number of Doors | 4 doors | 5 doors |
Vehicle Weight | 1536 kg | 1670 kg |
Vehicle Length | 4870 mm | 4640 mm |
Vehicle Width | 1810 mm | 1800 mm |
Vehicle Height | 1440 mm | 1470 mm |
Wheelbase Size | 2800 mm | 2700 mm |
Fuel Tank Capacity | 85 L | 60 L |