1978 BMW 725 vs. 2002 Opel Signum
To start off, 2002 Opel Signum is newer by 24 year(s). Which means there will be less support and parts availability for 1978 BMW 725. In addition, the cost of maintenance, including insurance, on 1978 BMW 725 would be higher. At 2,957 cc (6 cylinders), 2002 Opel Signum is equipped with a bigger engine. In terms of performance, 2002 Opel Signum (174 HP @ 4000 RPM) has 26 more horse power than 1978 BMW 725. (148 HP @ 5500 RPM) In normal driving conditions, 2002 Opel Signum should accelerate faster than 1978 BMW 725.
Because 1978 BMW 725 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 1978 BMW 725. However, in wet, icy, snow, or gravel driving conditions, 2002 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, 2002 Opel Signum (377 Nm @ 1900 RPM) has 162 more torque (in Nm) than 1978 BMW 725. (215 Nm @ 4000 RPM). This means 2002 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1978 BMW 725.
Compare all specifications:
1978 BMW 725 | 2002 Opel Signum | |
Make | BMW | Opel |
Model | 725 | Signum |
Year Released | 1978 | 2002 |
Body Type | Sedan | Hatchback |
Engine Position | Front | Front |
Engine Size | 2495 cc | 2957 cc |
Engine Cylinders | 6 cylinders | 6 cylinders |
Engine Type | in-line | V |
Valves per Cylinder | 2 valves | 4 valves |
Horse Power | 148 HP | 174 HP |
Engine RPM | 5500 RPM | 4000 RPM |
Torque | 215 Nm | 377 Nm |
Torque RPM | 4000 RPM | 1900 RPM |
Engine Bore Size | 86.1 mm | 87.5 mm |
Engine Stroke Size | 71.6 mm | 82 mm |
Engine Compression Ratio | 9.6:1 | 18.5:1 |
Fuel Type | Gasoline | Diesel |
Drive Type | Rear | Front |
Number of Seats | 5 seats | 5 seats |
Number of Doors | 4 doors | 5 doors |
Vehicle Length | 4870 mm | 4640 mm |
Vehicle Width | 1810 mm | 1800 mm |
Vehicle Height | 1440 mm | 1470 mm |
Wheelbase Size | 2810 mm | 2840 mm |