1972 BMW 520 vs. 2005 Porsche 911
To start off, 2005 Porsche 911 is newer by 33 year(s). Which means there will be less support and parts availability for 1972 BMW 520. In addition, the cost of maintenance, including insurance, on 1972 BMW 520 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 (445 HP @ 6000 RPM) has 295 more horse power than 1972 BMW 520. (150 HP @ 5900 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 1972 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche 911 weights approximately 145 kg more than 1972 BMW 520. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Porsche 911 (620 Nm) has 430 more torque (in Nm) than 1972 BMW 520. (190 Nm). This means 2005 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1972 BMW 520.
Compare all specifications:
| 1972 BMW 520 | 2005 Porsche 911 | |
| Make | BMW | Porsche |
| Model | 520 | 911 |
| Year Released | 1972 | 2005 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 1991 cc | 3605 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 150 HP | 445 HP |
| Engine RPM | 5900 RPM | 6000 RPM |
| Torque | 190 Nm | 620 Nm |
| Engine Bore Size | 80 mm | 100 mm |
| Engine Stroke Size | 66 mm | 76 mm |
| Engine Compression Ratio | 11.0:1 | 9.4:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1445 kg | 1590 kg |
| Vehicle Length | 4630 mm | 4440 mm |
| Vehicle Width | 1700 mm | 1840 mm |
| Vehicle Height | 1430 mm | 1300 mm |
| Wheelbase Size | 2770 mm | 2360 mm |
| Fuel Consumption | 7.3 L/100km | 10.7 L/100km |
| Fuel Consumption City | 12.4 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 9.2 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 80 L | 63 L |
