2005 BMW Z4 vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2005 BMW Z4. In addition, the cost of maintenance, including insurance, on 2005 BMW Z4 would be higher. At 2,171 cc (6 cylinders), 2005 BMW Z4 is equipped with a bigger engine. In terms of performance, 2005 BMW Z4 (168 HP @ 6250 RPM) has 46 more horse power than 2007 Opel Astra. (122 HP @ 5600 RPM). In normal driving conditions, 2005 BMW Z4 should accelerate faster than 2007 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW Z4 weights approximately 59 kg more than 2007 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 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 2005 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2007 Opel Astra, 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, 2005 BMW Z4 (210 Nm @ 3500 RPM) has 40 more torque (in Nm) than 2007 Opel Astra. (170 Nm @ 3800 RPM). This means 2005 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra.
Compare all specifications:
2005 BMW Z4 | 2007 Opel Astra | |
Make | BMW | Opel |
Model | Z4 | Astra |
Year Released | 2005 | 2007 |
Body Type | Convertible | Hatchback |
Engine Position | Front | Front |
Engine Size | 2171 cc | 1796 cc |
Engine Cylinders | 6 cylinders | 4 cylinders |
Engine Type | in-line | in-line |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 168 HP | 122 HP |
Engine RPM | 6250 RPM | 5600 RPM |
Torque | 210 Nm | 170 Nm |
Torque RPM | 3500 RPM | 3800 RPM |
Engine Bore Size | 80 mm | 80.5 mm |
Engine Stroke Size | 72 mm | 88.2 mm |
Engine Compression Ratio | 10.8:1 | 10.5:1 |
Fuel Type | Gasoline - Premium | Gasoline |
Top Speed | 225 km/hour | 200 km/hour |
Acceleration 0-100mph | 7.7 seconds | 10.7 seconds |
Drive Type | Rear | Front |
Transmission Type | Manual | Manual |
Number of Seats | 2 seats | 5 seats |
Number of Doors | 2 doors | 3 doors |
Vehicle Weight | 1325 kg | 1266 kg |
Vehicle Width | 1790 mm | 1760 mm |
Vehicle Height | 1310 mm | 1440 mm |
Wheelbase Size | 2500 mm | 2620 mm |
Fuel Consumption Overall | 8.9 L/100km | 7.7 L/100km |
Fuel Tank Capacity | 55 L | 52 L |