2006 BMW Z4 vs. 1998 BMW 845
To start off, 2006 BMW Z4 is newer by 8 year(s). Which means there will be less support and parts availability for 1998 BMW 845. In addition, the cost of maintenance, including insurance, on 1998 BMW 845 would be higher. At 4,398 cc (8 cylinders), 1998 BMW 845 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (338 HP @ 7900 RPM) has 56 more horse power than 1998 BMW 845. (282 HP @ 5700 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 1998 BMW 845. With that said, vehicle weight also plays an important factor in acceleration. 1998 BMW 845 weights approximately 265 kg more than 2006 BMW Z4.
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 BMW 845 (420 Nm @ 3900 RPM) has 55 more torque (in Nm) than 2006 BMW Z4. (365 Nm @ 4900 RPM). This means 1998 BMW 845 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2006 BMW Z4 | 1998 BMW 845 | |
| Make | BMW | BMW |
| Model | Z4 | 845 |
| Year Released | 2006 | 1998 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 282 HP |
| Engine RPM | 7900 RPM | 5700 RPM |
| Torque | 365 Nm | 420 Nm |
| Torque RPM | 4900 RPM | 3900 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1485 kg | 1750 kg |
| Vehicle Length | 4120 mm | 4790 mm |
| Vehicle Width | 1790 mm | 1860 mm |
| Vehicle Height | 1310 mm | 1350 mm |
| Wheelbase Size | 2500 mm | 2690 mm |
