2006 BMW Z4 vs. 2004 Opel Signum
To start off, 2006 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Opel Signum. In addition, the cost of maintenance, including insurance, on 2004 Opel Signum would be higher. At 2,494 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (189 HP @ 6000 RPM) has 64 more horse power than 2004 Opel Signum. (125 HP @ 5600 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Signum weights approximately 45 kg more than 2006 BMW Z4.
Because 2006 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 2006 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2004 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, 2006 BMW Z4 (245 Nm @ 3500 RPM) has 75 more torque (in Nm) than 2004 Opel Signum. (170 Nm @ 3800 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum.
Compare all specifications:
2006 BMW Z4 | 2004 Opel Signum | |
Make | BMW | Opel |
Model | Z4 | Signum |
Year Released | 2006 | 2004 |
Body Type | Convertible | Hatchback |
Engine Position | Front | Front |
Engine Size | 2494 cc | 1796 cc |
Engine Cylinders | 6 cylinders | 4 cylinders |
Engine Type | in-line | in-line |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 189 HP | 125 HP |
Engine RPM | 6000 RPM | 5600 RPM |
Torque | 245 Nm | 170 Nm |
Torque RPM | 3500 RPM | 3800 RPM |
Engine Bore Size | 84 mm | 80.5 mm |
Engine Stroke Size | 75 mm | 88.2 mm |
Engine Compression Ratio | 10.2:1 | 10.5:1 |
Fuel Type | Gasoline | Gasoline |
Top Speed | 235 km/hour | 197 km/hour |
Drive Type | Rear | Front |
Number of Seats | 2 seats | 5 seats |
Number of Doors | 2 doors | 5 doors |
Vehicle Weight | 1335 kg | 1380 kg |
Vehicle Length | 4100 mm | 4640 mm |
Vehicle Width | 1790 mm | 1800 mm |
Vehicle Height | 1310 mm | 1470 mm |
Wheelbase Size | 2500 mm | 2700 mm |
Fuel Consumption Overall | 8.9 L/100km | 7.5 L/100km |
Fuel Tank Capacity | 55 L | 58 L |