2005 Audi S4 vs. 1999 BMW Z9
To start off, 2005 Audi S4 is newer by 6 year(s). Which means there will be less support and parts availability for 1999 BMW Z9. In addition, the cost of maintenance, including insurance, on 1999 BMW Z9 would be higher. At 4,163 cc (8 cylinders), 2005 Audi S4 is equipped with a bigger engine. In terms of performance, 2005 Audi S4 (340 HP @ 4000 RPM) has 98 more horse power than 1999 BMW Z9. (242 HP @ 4000 RPM). In normal driving conditions, 2005 Audi S4 should accelerate faster than 1999 BMW Z9.
Let's talk about torque, 1999 BMW Z9 (560 Nm) has 150 more torque (in Nm) than 2005 Audi S4. (410 Nm). This means 1999 BMW Z9 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi S4.
Compare all specifications:
| 2005 Audi S4 | 1999 BMW Z9 | |
| Make | Audi | BMW |
| Model | S4 | Z9 |
| Year Released | 2005 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3901 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 242 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 410 Nm | 560 Nm |
| Number of Seats | 5 seats | 2 seats |
| Vehicle Length | 4550 mm | 5010 mm |
| Vehicle Width | 1770 mm | 2010 mm |
| Vehicle Height | 1430 mm | 1360 mm |
| Wheelbase Size | 2770 mm | 3110 mm |
