2005 Audi S4 vs. 1981 Audi 4000
To start off, 2005 Audi S4 is newer by 24 year(s). Which means there will be less support and parts availability for 1981 Audi 4000. In addition, the cost of maintenance, including insurance, on 1981 Audi 4000 would be higher. At 4,172 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 4000 RPM) has 240 more horse power than 1981 Audi 4000. (100 HP @ 4250 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 1981 Audi 4000.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 273 more torque (in Nm) than 1981 Audi 4000. (137 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1981 Audi 4000.
Compare all specifications:
| 2005 Audi S4 | 1981 Audi 4000 | |
| Make | Audi | Audi |
| Model | S4 | 4000 |
| Year Released | 2005 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 2144 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 100 HP |
| Engine RPM | 4000 RPM | 4250 RPM |
| Torque | 410 Nm | 137 Nm |
| Engine Bore Size | 85 mm | 79.2 mm |
| Engine Stroke Size | 93 mm | 86.4 mm |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4550 mm | 4490 mm |
| Vehicle Width | 1770 mm | 1690 mm |
| Vehicle Height | 1430 mm | 1370 mm |
| Wheelbase Size | 2470 mm | 2550 mm |
