2003 BMW M3 vs. 2004 Porsche 911
To start off, 2004 Porsche 911 is newer by 1 year(s). Which means there will be less support and parts availability for 2003 BMW M3. In addition, the cost of maintenance, including insurance, on 2003 BMW M3 would be higher. At 3,600 cc (6 cylinders), 2004 Porsche 911 is equipped with a bigger engine. In terms of performance, 2004 Porsche 911 (444 HP @ 5700 RPM) has 102 more horse power than 2003 BMW M3. (342 HP @ 7900 RPM) In normal driving conditions, 2004 Porsche 911 should accelerate faster than 2003 BMW M3. With that said, vehicle weight also plays an important factor in acceleration. 2004 Porsche 911 weights approximately 205 kg more than 2003 BMW M3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2003 BMW M3. In wet, icy, snow, or gravel driving conditions, 2004 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 Porsche 911 (620 Nm @ 3500 RPM) has 270 more torque (in Nm) than 2003 BMW M3. (350 Nm @ 4900 RPM). This means 2004 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW M3.
Compare all specifications:
| 2003 BMW M3 | 2004 Porsche 911 | |
| Make | BMW | Porsche |
| Model | M3 | 911 |
| Year Released | 2003 | 2004 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 3168 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 342 HP | 444 HP |
| Engine RPM | 7900 RPM | 5700 RPM |
| Torque | 350 Nm | 620 Nm |
| Torque RPM | 4900 RPM | 3500 RPM |
| Engine Bore Size | 87 mm | 100.1 mm |
| Engine Stroke Size | 91 mm | 76.4 mm |
| Engine Compression Ratio | 11.5:1 | 9.4:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 4.9 seconds | 4.2 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1385 kg | 1590 kg |
| Vehicle Length | 4500 mm | 4440 mm |
| Vehicle Width | 1790 mm | 1840 mm |
| Vehicle Height | 1370 mm | 1300 mm |
| Wheelbase Size | 2730 mm | 2360 mm |
| Fuel Consumption Overall | 11.4 L/100km | 13.3 L/100km |
| Fuel Tank Capacity | 63 L | 64 L |
