2002 BMW Z4 vs. 2003 Opel Speedster
To start off, 2003 Opel Speedster is newer by 1 year(s). Which means there will be less support and parts availability for 2002 BMW Z4. In addition, the cost of maintenance, including insurance, on 2002 BMW Z4 would be higher. At 2,996 cc (6 cylinders), 2002 BMW Z4 is equipped with a bigger engine. In terms of performance, 2002 BMW Z4 (227 HP @ 5900 RPM) has 82 more horse power than 2003 Opel Speedster. (145 HP @ 6000 RPM). In normal driving conditions, 2002 BMW Z4 should accelerate faster than 2003 Opel Speedster. With that said, vehicle weight also plays an important factor in acceleration. 2002 BMW Z4 weights approximately 510 kg more than 2003 Opel Speedster. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2002 BMW Z4 (300 Nm @ 3500 RPM) has 97 more torque (in Nm) than 2003 Opel Speedster. (203 Nm @ 4000 RPM). This means 2002 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Speedster. 2002 BMW Z4 has automatic transmission and 2003 Opel Speedster has manual transmission. 2003 Opel Speedster will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2002 BMW Z4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2002 BMW Z4 | 2003 Opel Speedster | |
| Make | BMW | Opel |
| Model | Z4 | Speedster |
| Year Released | 2002 | 2003 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Middle |
| Engine Size | 2996 cc | 2198 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 227 HP | 145 HP |
| Engine RPM | 5900 RPM | 6000 RPM |
| Torque | 300 Nm | 203 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 86 mm |
| Engine Stroke Size | 89.6 mm | 94.6 mm |
| Engine Compression Ratio | 10.2:1 | 10.0:1 |
| Top Speed | 244 km/hour | 217 km/hour |
| Acceleration 0-100mph | 6.2 seconds | 5.9 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1386 kg | 876 kg |
| Vehicle Length | 4100 mm | 3790 mm |
| Vehicle Width | 1790 mm | 1710 mm |
| Vehicle Height | 1310 mm | 1120 mm |
| Wheelbase Size | 2500 mm | 2710 mm |
| Fuel Consumption Highway | 7.3 L/100km | 6.4 L/100km |
| Fuel Consumption City | 13.5 L/100km | 12.3 L/100km |
| Fuel Consumption Overall | 9.5 L/100km | 8.5 L/100km |
| Fuel Tank Capacity | 55 L | 36 L |
