2007 BMW 523 vs. 1991 Porsche 964
To start off, 2007 BMW 523 is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Porsche 964. In addition, the cost of maintenance, including insurance, on 1991 Porsche 964 would be higher. At 3,600 cc (6 cylinders), 1991 Porsche 964 is equipped with a bigger engine. In terms of performance, 1991 Porsche 964 (261 HP @ 6100 RPM) has 86 more horse power than 2007 BMW 523. (175 HP @ 5800 RPM) In normal driving conditions, 1991 Porsche 964 should accelerate faster than 2007 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 523 weights approximately 295 kg more than 1991 Porsche 964.
Because 1991 Porsche 964 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 523. In wet, icy, snow, or gravel driving conditions, 1991 Porsche 964 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, 1991 Porsche 964 (318 Nm @ 4800 RPM) has 88 more torque (in Nm) than 2007 BMW 523. (230 Nm @ 3500 RPM). This means 1991 Porsche 964 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 523. 2007 BMW 523 has automatic transmission and 1991 Porsche 964 has manual transmission. 1991 Porsche 964 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW 523 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW 523 | 1991 Porsche 964 | |
| Make | BMW | Porsche |
| Model | 523 | 964 |
| Year Released | 2007 | 1991 |
| Engine Position | Front | Rear |
| Engine Size | 2497 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 175 HP | 261 HP |
| Engine RPM | 5800 RPM | 6100 RPM |
| Torque | 230 Nm | 318 Nm |
| Torque RPM | 3500 RPM | 4800 RPM |
| Engine Bore Size | 82 mm | 100.1 mm |
| Engine Stroke Size | 78.8 mm | 76.4 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1500 kg | 1205 kg |
| Vehicle Length | 4850 mm | 4260 mm |
| Vehicle Width | 1470 mm | 1660 mm |
| Vehicle Height | 1850 mm | 1330 mm |
| Wheelbase Size | 2890 mm | 2280 mm |
| Fuel Tank Capacity | 70 L | 73 L |
