1981 BMW 525 vs. 2006 Porsche 911
To start off, 2006 Porsche 911 is newer by 25 year(s). Which means there will be less support and parts availability for 1981 BMW 525. In addition, the cost of maintenance, including insurance, on 1981 BMW 525 would be higher. At 3,600 cc (6 cylinders), 2006 Porsche 911 is equipped with a bigger engine. In terms of performance, 2006 Porsche 911 (376 HP @ 7400 RPM) has 228 more horse power than 1981 BMW 525. (148 HP @ 5500 RPM) In normal driving conditions, 2006 Porsche 911 should accelerate faster than 1981 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2006 Porsche 911 weights approximately 115 kg more than 1981 BMW 525. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2006 Porsche 911 (385 Nm @ 5000 RPM) has 170 more torque (in Nm) than 1981 BMW 525. (215 Nm @ 4000 RPM). This means 2006 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 525.
Compare all specifications:
| 1981 BMW 525 | 2006 Porsche 911 | |
| Make | BMW | Porsche |
| Model | 525 | 911 |
| Year Released | 1981 | 2006 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 2495 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 376 HP |
| Engine RPM | 5500 RPM | 7400 RPM |
| Torque | 215 Nm | 385 Nm |
| Torque RPM | 4000 RPM | 5000 RPM |
| Engine Bore Size | 86.1 mm | 100 mm |
| Engine Stroke Size | 71.6 mm | 76.4 mm |
| Engine Compression Ratio | 9.6:1 | 11.7:1 |
| Acceleration 0-100mph | 8.6 seconds | 4.8 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1280 kg | 1395 kg |
| Vehicle Length | 4780 mm | 4450 mm |
| Vehicle Width | 1810 mm | 1810 mm |
| Vehicle Height | 1440 mm | 1290 mm |
| Wheelbase Size | 2630 mm | 2360 mm |
| Fuel Consumption Overall | 9.4 L/100km | 12.9 L/100km |
| Fuel Tank Capacity | 70 L | 89 L |
