1973 BMW 525 vs. 2005 Porsche 911
To start off, 2005 Porsche 911 is newer by 32 year(s). Which means there will be less support and parts availability for 1973 BMW 525. In addition, the cost of maintenance, including insurance, on 1973 BMW 525 would be higher. At 3,605 cc (6 cylinders), 2005 Porsche 911 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (444 HP @ 5700 RPM) has 301 more horse power than 1973 BMW 525. (143 HP @ 6000 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 1973 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche 911 weights approximately 280 kg more than 1973 BMW 525. 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 1973 BMW 525. 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, 2005 Porsche 911 (620 Nm @ 3500 RPM) has 412 more torque (in Nm) than 1973 BMW 525. (208 Nm @ 4000 RPM). This means 2005 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1973 BMW 525.
Compare all specifications:
| 1973 BMW 525 | 2005 Porsche 911 | |
| Make | BMW | Porsche |
| Model | 525 | 911 |
| Year Released | 1973 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 2494 cc | 3605 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 143 HP | 444 HP |
| Engine RPM | 6000 RPM | 5700 RPM |
| Torque | 208 Nm | 620 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 86 mm | 100 mm |
| Engine Stroke Size | 71.6 mm | 76 mm |
| Engine Compression Ratio | 9.0:1 | 9.4:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 192 km/hour | 307 km/hour |
| Acceleration 0-100mph | 10.5 seconds | 4.6 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1380 kg | 1660 kg |
| Vehicle Length | 4630 mm | 4440 mm |
| Vehicle Width | 1700 mm | 1840 mm |
| Vehicle Height | 1430 mm | 1300 mm |
| Wheelbase Size | 2640 mm | 2360 mm |
| Fuel Tank Capacity | 70 L | 63 L |
