2007 BMW Z4 vs. 2003 Opel Signum
To start off, 2007 BMW Z4 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 3,246 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (338 HP @ 7900 RPM) has 163 more horse power than 2003 Opel Signum. (175 HP @ 4000 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 185 kg more than 2007 BMW Z4.
Because 2007 BMW Z4 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 2007 BMW Z4. 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 (370 Nm @ 1900 RPM) has 5 more torque (in Nm) than 2007 BMW Z4. (365 Nm @ 4900 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4.
Compare all specifications:
2007 BMW Z4 | 2003 Opel Signum | |
Make | BMW | Opel |
Model | Z4 | Signum |
Year Released | 2007 | 2003 |
Body Type | Convertible | Hatchback |
Engine Position | Front | Front |
Engine Size | 3246 cc | 2958 cc |
Engine Cylinders | 6 cylinders | 6 cylinders |
Engine Type | in-line | V |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 338 HP | 175 HP |
Engine RPM | 7900 RPM | 4000 RPM |
Torque | 365 Nm | 370 Nm |
Torque RPM | 4900 RPM | 1900 RPM |
Engine Bore Size | 87 mm | 87.5 mm |
Engine Stroke Size | 91 mm | 82 mm |
Engine Compression Ratio | 11.5:1 | 18.5:1 |
Top Speed | 250 km/hour | 221 km/hour |
Acceleration 0-100mph | 5 seconds | 9.4 seconds |
Drive Type | Rear | Front |
Transmission Type | Manual | Manual |
Number of Seats | 2 seats | 5 seats |
Number of Doors | 2 doors | 5 doors |
Vehicle Weight | 1485 kg | 1670 kg |
Vehicle Length | 4120 mm | 4640 mm |
Vehicle Width | 1790 mm | 1800 mm |
Vehicle Height | 1310 mm | 1470 mm |
Wheelbase Size | 2500 mm | 2700 mm |
Fuel Consumption Overall | 12.1 L/100km | 7.4 L/100km |
Fuel Tank Capacity | 55 L | 60 L |