1981 BMW 745 vs. 1992 Porsche 911
To start off, 1992 Porsche 911 is newer by 11 year(s). Which means there will be less support and parts availability for 1981 BMW 745. In addition, the cost of maintenance, including insurance, on 1981 BMW 745 would be higher. At 3,430 cc (6 cylinders), 1981 BMW 745 is equipped with a bigger engine. In terms of performance, 1981 BMW 745 (252 HP @ 5200 RPM) has 24 more horse power than 1992 Porsche 911. (228 HP @ 5900 RPM). In normal driving conditions, 1981 BMW 745 should accelerate faster than 1992 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 1981 BMW 745 weights approximately 415 kg more than 1992 Porsche 911. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1981 BMW 745 (380 Nm @ 2200 RPM) has 94 more torque (in Nm) than 1992 Porsche 911. (286 Nm @ 4800 RPM). This means 1981 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 1992 Porsche 911.
Compare all specifications:
| 1981 BMW 745 | 1992 Porsche 911 | |
| Make | BMW | Porsche |
| Model | 745 | 911 |
| Year Released | 1981 | 1992 |
| Body Type | Sedan | Roadster |
| Engine Position | Front | Rear |
| Engine Size | 3430 cc | 3163 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 252 HP | 228 HP |
| Engine RPM | 5200 RPM | 5900 RPM |
| Torque | 380 Nm | 286 Nm |
| Torque RPM | 2200 RPM | 4800 RPM |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1590 kg | 1175 kg |
| Vehicle Length | 4870 mm | 4300 mm |
| Vehicle Width | 1810 mm | 1660 mm |
| Vehicle Height | 1440 mm | 1260 mm |
