2007 BMW Z4 vs. 2005 Opel Signum
To start off, 2007 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Opel Signum. In addition, the cost of maintenance, including insurance, on 2005 Opel Signum would be higher. At 2,494 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (215 HP @ 6500 RPM) has 116 more horse power than 2005 Opel Signum. (99 HP @ 3120 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Signum weights approximately 305 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, 2005 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, 2007 BMW Z4 (250 Nm @ 2750 RPM) has 20 more torque (in Nm) than 2005 Opel Signum. (230 Nm @ 1500 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum. 2007 BMW Z4 has automatic transmission and 2005 Opel Signum has manual transmission. 2005 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW Z4 will be easier to drive especially in heavy traffic.
Compare all specifications:
2007 BMW Z4 | 2005 Opel Signum | |
Make | BMW | Opel |
Model | Z4 | Signum |
Year Released | 2007 | 2005 |
Body Type | Convertible | Hatchback |
Engine Position | Front | Front |
Engine Size | 2494 cc | 1993 cc |
Engine Cylinders | 6 cylinders | 4 cylinders |
Engine Type | in-line | in-line |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 215 HP | 99 HP |
Engine RPM | 6500 RPM | 3120 RPM |
Torque | 250 Nm | 230 Nm |
Torque RPM | 2750 RPM | 1500 RPM |
Engine Bore Size | 82 mm | 84 mm |
Engine Stroke Size | 78.8 mm | 90 mm |
Engine Compression Ratio | 10.5:1 | 18.5:1 |
Fuel Type | Gasoline | Diesel |
Top Speed | 227 km/hour | 185 km/hour |
Acceleration 0-100mph | 7.5 seconds | 14 seconds |
Drive Type | Rear | Front |
Transmission Type | Automatic | Manual |
Number of Seats | 2 seats | 5 seats |
Number of Doors | 2 doors | 5 doors |
Vehicle Weight | 1290 kg | 1595 kg |
Vehicle Length | 4100 mm | 4640 mm |
Vehicle Width | 1790 mm | 1800 mm |
Vehicle Height | 1310 mm | 1470 mm |
Wheelbase Size | 2500 mm | 2740 mm |
Fuel Consumption Overall | 9.5 L/100km | 5.9 L/100km |
Fuel Tank Capacity | 55 L | 60 L |