2007 BMW 645 vs. 2008 Chevrolet Optra
To start off, 2008 Chevrolet Optra is newer by 1 year(s). Which means there will be less support and parts availability for 2007 BMW 645. In addition, the cost of maintenance, including insurance, on 2007 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. In terms of performance, 2007 BMW 645 (328 HP @ 6100 RPM) has 225 more horse power than 2008 Chevrolet Optra. (103 HP @ 5800 RPM). In normal driving conditions, 2007 BMW 645 should accelerate faster than 2008 Chevrolet Optra. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 645 weights approximately 515 kg more than 2008 Chevrolet Optra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW 645 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2007 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 2008 Chevrolet Optra, being front wheel drive (FWD), will offer much better control with better grip. 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 645 (450 Nm @ 3600 RPM) has 300 more torque (in Nm) than 2008 Chevrolet Optra. (150 Nm @ 4000 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2008 Chevrolet Optra.
Compare all specifications:
| 2007 BMW 645 | 2008 Chevrolet Optra | |
| Make | BMW | Chevrolet |
| Model | 645 | Optra |
| Year Released | 2007 | 2008 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1598 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 103 HP |
| Engine RPM | 6100 RPM | 5800 RPM |
| Torque | 450 Nm | 150 Nm |
| Torque RPM | 3600 RPM | 4000 RPM |
| Engine Compression Ratio | 10.0:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 245 km/hour | 187 km/hour |
| Acceleration 0-100mph | 5.6 seconds | 12 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1690 kg | 1175 kg |
| Vehicle Length | 4830 mm | 4320 mm |
| Vehicle Height | 1380 mm | 1500 mm |
| Wheelbase Size | 2790 mm | 2610 mm |
| Fuel Consumption Overall | 11.8 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 70 L | 60 L |
