2003 Audi A2 vs. 2004 BMW 645
To start off, 2004 BMW 645 is newer by 1 year(s). Which means there will be less support and parts availability for 2003 Audi A2. In addition, the cost of maintenance, including insurance, on 2003 Audi A2 would be higher. At 4,392 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (322 HP @ 7400 RPM) has 248 more horse power than 2003 Audi A2. (74 HP @ 5000 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 2003 Audi A2. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 820 kg more than 2003 Audi A2. 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, 2003 Audi A2, 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 (447 Nm) has 321 more torque (in Nm) than 2003 Audi A2. (126 Nm). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi A2.
Compare all specifications:
| 2003 Audi A2 | 2004 BMW 645 | |
| Make | Audi | BMW |
| Model | A2 | 645 |
| Year Released | 2003 | 2004 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1390 cc | 4392 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 74 HP | 322 HP |
| Engine RPM | 5000 RPM | 7400 RPM |
| Torque | 126 Nm | 447 Nm |
| Engine Bore Size | 76.5 mm | 92 mm |
| Engine Stroke Size | 75.6 mm | 83 mm |
| Engine Compression Ratio | 10.5:1 | 10.5:1 |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 895 kg | 1715 kg |
| Vehicle Length | 3830 mm | 4840 mm |
| Vehicle Width | 1680 mm | 1860 mm |
| Vehicle Height | 1560 mm | 1380 mm |
| Wheelbase Size | 2410 mm | 2790 mm |
| Fuel Consumption Overall | 6 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 42 L | 70 L |
