2009 Alfa Romeo Brera vs. 2004 BMW 645
To start off, 2009 Alfa Romeo Brera is newer by 5 year(s). Which means there will be less support and parts availability for 2004 BMW 645. In addition, the cost of maintenance, including insurance, on 2004 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 131 more horse power than 2009 Alfa Romeo Brera. (197 HP @ 4000 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 2009 Alfa Romeo Brera. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 15 kg more than 2009 Alfa Romeo Brera. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 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 2004 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 2009 Alfa Romeo Brera, 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, 2004 BMW 645 (450 Nm @ 3600 RPM) has 50 more torque (in Nm) than 2009 Alfa Romeo Brera. (400 Nm @ 2000 RPM). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2009 Alfa Romeo Brera.
Compare all specifications:
| 2009 Alfa Romeo Brera | 2004 BMW 645 | |
| Make | Alfa Romeo | BMW |
| Model | Brera | 645 |
| Year Released | 2009 | 2004 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 4398 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 197 HP | 328 HP |
| Engine RPM | 4000 RPM | 6100 RPM |
| Torque | 400 Nm | 450 Nm |
| Torque RPM | 2000 RPM | 3600 RPM |
| Engine Bore Size | 82.1 mm | 92 mm |
| Engine Stroke Size | 90.4 mm | 82.7 mm |
| Engine Compression Ratio | 17.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 8.1 seconds | 5.6 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 1675 kg | 1690 kg |
| Vehicle Length | 4420 mm | 4830 mm |
| Vehicle Width | 1840 mm | 1860 mm |
| Vehicle Height | 1350 mm | 1380 mm |
| Wheelbase Size | 2530 mm | 2830 mm |
| Fuel Consumption Overall | 6.8 L/100km | 12 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
