2006 BMW Z4 vs. 1998 Opel Speedster
To start off, 2006 BMW Z4 is newer by 8 year(s). Which means there will be less support and parts availability for 1998 Opel Speedster. In addition, the cost of maintenance, including insurance, on 1998 Opel Speedster would be higher. At 2,492 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 1998 Opel Speedster (198 HP @ 5500 RPM) has 9 more horse power than 2006 BMW Z4. (189 HP @ 6000 RPM) In normal driving conditions, 1998 Opel Speedster should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 330 kg more than 1998 Opel Speedster.
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, 1998 Opel Speedster (250 Nm @ 1950 RPM) has 5 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 1998 Opel Speedster will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2006 BMW Z4 | 1998 Opel Speedster | |
| Make | BMW | Opel |
| Model | Z4 | Speedster |
| Year Released | 2006 | 1998 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Middle |
| Engine Size | 2492 cc | 1995 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 198 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 245 Nm | 250 Nm |
| Torque RPM | 3500 RPM | 1950 RPM |
| Engine Bore Size | 84 mm | 86 mm |
| Engine Stroke Size | 75 mm | 86 mm |
| Engine Compression Ratio | 11.0:1 | 8.8:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 235 km/hour | 243 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1335 kg | 1005 kg |
| Vehicle Length | 4100 mm | 3790 mm |
| Vehicle Width | 1790 mm | 1710 mm |
| Vehicle Height | 1310 mm | 1120 mm |
| Wheelbase Size | 2500 mm | 2340 mm |
