2005 Audi S4 vs. 1981 BMW 725
To start off, 2005 Audi S4 is newer by 24 year(s). Which means there will be less support and parts availability for 1981 BMW 725. In addition, the cost of maintenance, including insurance, on 1981 BMW 725 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 192 more horse power than 1981 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 1981 BMW 725.
Let's talk about torque, 2005 Audi S4 (410 Nm) has 195 more torque (in Nm) than 1981 BMW 725. (215 Nm). This means 2005 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 725.
Compare all specifications:
2005 Audi S4 | 1981 BMW 725 | |
Make | Audi | BMW |
Model | S4 | 725 |
Year Released | 2005 | 1981 |
Body Type | Station Wagon | Sedan |
Engine Position | Front | Front |
Engine Size | 4172 cc | 2493 cc |
Engine Cylinders | 8 cylinders | 6 cylinders |
Engine Type | V | in-line |
Valves per Cylinder | 5 valves | 2 valves |
Horse Power | 340 HP | 148 HP |
Engine RPM | 4000 RPM | 5500 RPM |
Torque | 410 Nm | 215 Nm |
Engine Bore Size | 85 mm | 86 mm |
Engine Stroke Size | 93 mm | 71.6 mm |
Engine Compression Ratio | 11.0:1 | 9.6:1 |
Number of Seats | 5 seats | 5 seats |
Number of Doors | 5 doors | 4 doors |
Vehicle Length | 4550 mm | 4870 mm |
Vehicle Width | 1770 mm | 1810 mm |
Vehicle Height | 1430 mm | 1440 mm |
Wheelbase Size | 2470 mm | 2810 mm |