2003 BMW 645 vs. 2010 Ascari KZ1
To start off, 2010 Ascari KZ1 is newer by 7 year(s). Which means there will be less support and parts availability for 2003 BMW 645. In addition, the cost of maintenance, including insurance, on 2003 BMW 645 would be higher. At 4,941 cc (8 cylinders), 2010 Ascari KZ1 is equipped with a bigger engine. In terms of performance, 2010 Ascari KZ1 (500 HP @ 7000 RPM) has 179 more horse power than 2003 BMW 645. (321 HP @ 6100 RPM) In normal driving conditions, 2010 Ascari KZ1 should accelerate faster than 2003 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 545 kg more than 2010 Ascari KZ1.
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, 2010 Ascari KZ1 (550 Nm @ 4500 RPM) has 100 more torque (in Nm) than 2003 BMW 645. (450 Nm @ 3600 RPM). This means 2010 Ascari KZ1 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 645. 2003 BMW 645 has automatic transmission and 2010 Ascari KZ1 has manual transmission. 2010 Ascari KZ1 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW 645 | 2010 Ascari KZ1 | |
| Make | BMW | Ascari |
| Model | 645 | KZ1 |
| Year Released | 2003 | 2010 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 4398 cc | 4941 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 321 HP | 500 HP |
| Engine RPM | 6100 RPM | 7000 RPM |
| Torque | 450 Nm | 550 Nm |
| Torque RPM | 3600 RPM | 4500 RPM |
| Engine Bore Size | 92 mm | 94 mm |
| Engine Stroke Size | 82.7 mm | 89 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Top Speed | 250 km/hour | 321 km/hour |
| Acceleration 0-100mph | 6.2 seconds | 3.7 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1895 kg | 1350 kg |
| Vehicle Length | 4830 mm | 4300 mm |
| Vehicle Width | 1860 mm | 1852 mm |
| Vehicle Height | 1380 mm | 1138 mm |
| Wheelbase Size | 2790 mm | 2636 mm |
