2007 BMW Z4 vs. 1997 Daihatsu Rocky
To start off, 2007 BMW Z4 is newer by 10 year(s). Which means there will be less support and parts availability for 1997 Daihatsu Rocky. In addition, the cost of maintenance, including insurance, on 1997 Daihatsu Rocky would be higher. At 2,237 cc (4 cylinders), 1997 Daihatsu Rocky is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (148 HP @ 6200 RPM) has 57 more horse power than 1997 Daihatsu Rocky. (91 HP @ 4200 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 1997 Daihatsu Rocky. With that said, vehicle weight also plays an important factor in acceleration. 1997 Daihatsu Rocky weights approximately 85 kg more than 2007 BMW Z4.
Because 1997 Daihatsu Rocky is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW Z4. In wet, icy, snow, or gravel driving conditions, 1997 Daihatsu Rocky will offer significantly more control. 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 (200 Nm @ 3600 RPM) has 18 more torque (in Nm) than 1997 Daihatsu Rocky. (182 Nm @ 2500 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1997 Daihatsu Rocky.
Compare all specifications:
| 2007 BMW Z4 | 1997 Daihatsu Rocky | |
| Make | BMW | Daihatsu |
| Model | Z4 | Rocky |
| Year Released | 2007 | 1997 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 1993 cc | 2237 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 148 HP | 91 HP |
| Engine RPM | 6200 RPM | 4200 RPM |
| Torque | 200 Nm | 182 Nm |
| Torque RPM | 3600 RPM | 2500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1295 kg | 1380 kg |
| Vehicle Length | 4100 mm | 3850 mm |
| Vehicle Width | 1310 mm | 1700 mm |
| Vehicle Height | 1790 mm | 1860 mm |
| Wheelbase Size | 2500 mm | 2540 mm |
