2006 BMW 645 vs. 2008 BMW Z4
To start off, 2008 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 BMW 645. In addition, the cost of maintenance, including insurance, on 2006 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 113 more horse power than 2008 BMW Z4. (215 HP @ 6250 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 2008 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 415 kg more than 2008 BMW Z4. 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 199 more torque (in Nm) than 2008 BMW Z4. (251 Nm @ 2750 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW Z4.
Compare all specifications:
2006 BMW 645 | 2008 BMW Z4 | |
Make | BMW | BMW |
Model | 645 | Z4 |
Year Released | 2006 | 2008 |
Body Type | Coupe | Convertible |
Engine Position | Front | Front |
Engine Size | 4398 cc | 2994 cc |
Engine Cylinders | 8 cylinders | 6 cylinders |
Engine Type | V | in-line |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 328 HP | 215 HP |
Engine RPM | 6100 RPM | 6250 RPM |
Torque | 450 Nm | 251 Nm |
Torque RPM | 3600 RPM | 2750 RPM |
Engine Bore Size | 92 mm | 85.1 mm |
Engine Stroke Size | 83 mm | 88.1 mm |
Fuel Type | Gasoline | Gasoline |
Top Speed | 250 km/hour | 250 km/hour |
Acceleration 0-100mph | 5.6 seconds | 5.9 seconds |
Drive Type | Rear | Rear |
Transmission Type | Manual | Manual |
Number of Seats | 4 seats | 2 seats |
Number of Doors | 2 doors | 2 doors |
Vehicle Weight | 1810 kg | 1395 kg |
Vehicle Length | 4830 mm | 4100 mm |
Vehicle Width | 1860 mm | 1790 mm |
Vehicle Height | 1380 mm | 1300 mm |
Wheelbase Size | 2790 mm | 2500 mm |
Fuel Consumption Overall | 11.9 L/100km | 11.2 L/100km |
Fuel Tank Capacity | 70 L | 55 L |