2005 Audi A4 vs. 1991 Porsche 964
To start off, 2005 Audi A4 is newer by 14 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 41 more horse power than 2005 Audi A4. (220 HP @ 6300 RPM) In normal driving conditions, 1991 Porsche 964 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 440 kg more than 1991 Porsche 964.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear 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, 1991 Porsche 964 (318 Nm @ 4800 RPM) has 18 more torque (in Nm) than 2005 Audi A4. (300 Nm @ 3200 RPM). This means 1991 Porsche 964 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4. 2005 Audi A4 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. 2005 Audi A4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi A4 | 1991 Porsche 964 | |
| Make | Audi | Porsche |
| Model | A4 | 964 |
| Year Released | 2005 | 1991 |
| Engine Position | Front | Rear |
| Engine Size | 2983 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 220 HP | 261 HP |
| Engine RPM | 6300 RPM | 6100 RPM |
| Torque | 300 Nm | 318 Nm |
| Torque RPM | 3200 RPM | 4800 RPM |
| Engine Bore Size | 83 mm | 100.1 mm |
| Engine Stroke Size | 93 mm | 76.4 mm |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1645 kg | 1205 kg |
| Vehicle Length | 4550 mm | 4260 mm |
| Vehicle Width | 1770 mm | 1660 mm |
| Vehicle Height | 1430 mm | 1330 mm |
| Wheelbase Size | 2660 mm | 2280 mm |
| Fuel Tank Capacity | 66 L | 73 L |
