2008 BMW Z4 vs. 2007 Opel Signum
To start off, 2008 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 Opel Signum. In addition, the cost of maintenance, including insurance, on 2007 Opel Signum would be higher. At 2,979 cc (6 cylinders), 2008 BMW Z4 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Signum weights approximately 245 kg more than 2008 BMW Z4.
Because 2008 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 2008 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2007 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, 2008 BMW Z4 (315 Nm @ 2750 RPM) has 95 more torque (in Nm) than 2007 Opel Signum. (220 Nm @ 3800 RPM). This means 2008 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Signum.
Compare all specifications:
| 2008 BMW Z4 | 2007 Opel Signum | |
| Make | BMW | Opel |
| Model | Z4 | Signum |
| Year Released | 2008 | 2007 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 2196 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 0 HP | 153 HP |
| Torque | 315 Nm | 220 Nm |
| Torque RPM | 2750 RPM | 3800 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 250 km/hour | 211 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 9.8 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 | 1290 kg | 1535 kg |
| Vehicle Length | 4870 mm | 4640 mm |
| Vehicle Height | 1480 mm | 1470 mm |
| Wheelbase Size | 2500 mm | 2840 mm |
| Fuel Consumption Overall | 9.3 L/100km | 8.1 L/100km |
| Fuel Tank Capacity | 55 L | 60 L |
