2004 BMW M5 vs. 2005 Porsche 911
To start off, 2005 Porsche 911 is newer by 1 year(s). Which means there will be less support and parts availability for 2004 BMW M5. In addition, the cost of maintenance, including insurance, on 2004 BMW M5 would be higher. At 4,999 cc (10 cylinders), 2004 BMW M5 is equipped with a bigger engine. In terms of performance, 2004 BMW M5 (500 HP @ 7400 RPM) has 179 more horse power than 2005 Porsche 911. (321 HP @ 4250 RPM). In normal driving conditions, 2004 BMW M5 should accelerate faster than 2005 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW M5 weights approximately 273 kg more than 2005 Porsche 911. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2004 BMW M5. In wet, icy, snow, or gravel driving conditions, 2005 Porsche 911 will offer significantly more control. 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 M5 (520 Nm @ 6100 RPM) has 150 more torque (in Nm) than 2005 Porsche 911. (370 Nm @ 4250 RPM). This means 2004 BMW M5 will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche 911.
Compare all specifications:
| 2004 BMW M5 | 2005 Porsche 911 | |
| Make | BMW | Porsche |
| Model | M5 | 911 |
| Year Released | 2004 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 4999 cc | 3587 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 500 HP | 321 HP |
| Engine RPM | 7400 RPM | 4250 RPM |
| Torque | 520 Nm | 370 Nm |
| Torque RPM | 6100 RPM | 4250 RPM |
| Engine Bore Size | 92 mm | 96 mm |
| Engine Stroke Size | 75.2 mm | 82.8 mm |
| Engine Compression Ratio | 12.0:1 | 11.3:1 |
| Top Speed | 250 km/hour | 285 km/hour |
| Acceleration 0-100mph | 4.7 seconds | 5.2 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1758 kg | 1485 kg |
| Vehicle Length | 4850 mm | 4440 mm |
| Vehicle Width | 1850 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1310 mm |
| Wheelbase Size | 2840 mm | 2360 mm |
| Fuel Consumption Overall | 14.8 L/100km | 11.2 L/100km |
| Fuel Tank Capacity | 70 L | 64 L |
