1999 Audi A4 vs. 1991 Porsche 911
To start off, 1999 Audi A4 is newer by 8 year(s). Which means there will be less support and parts availability for 1991 Porsche 911. In addition, the cost of maintenance, including insurance, on 1991 Porsche 911 would be higher. At 3,163 cc (6 cylinders), 1991 Porsche 911 is equipped with a bigger engine. In terms of performance, 1991 Porsche 911 (228 HP @ 5900 RPM) has 105 more horse power than 1999 Audi A4. (123 HP @ 5800 RPM) In normal driving conditions, 1991 Porsche 911 should accelerate faster than 1999 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi A4 weights approximately 90 kg more than 1991 Porsche 911.
Let's talk about torque, 1991 Porsche 911 (286 Nm @ 4800 RPM) has 118 more torque (in Nm) than 1999 Audi A4. (168 Nm @ 3500 RPM). This means 1991 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4.
Compare all specifications:
| 1999 Audi A4 | 1991 Porsche 911 | |
| Make | Audi | Porsche |
| Model | A4 | 911 |
| Year Released | 1999 | 1991 |
| Body Type | Sedan | Roadster |
| Engine Position | Front | Rear |
| Engine Size | 1781 cc | 3163 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 123 HP | 228 HP |
| Engine RPM | 5800 RPM | 5900 RPM |
| Torque | 168 Nm | 286 Nm |
| Torque RPM | 3500 RPM | 4800 RPM |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1265 kg | 1175 kg |
| Vehicle Length | 4480 mm | 4300 mm |
| Vehicle Width | 1740 mm | 1660 mm |
| Vehicle Height | 1420 mm | 1260 mm |
