1998 Audi A8 vs. 2004 BMW Z4
To start off, 2004 BMW Z4 is newer by 6 year(s). Which means there will be less support and parts availability for 1998 Audi A8. In addition, the cost of maintenance, including insurance, on 1998 Audi A8 would be higher. At 4,172 cc (8 cylinders), 1998 Audi A8 is equipped with a bigger engine. In terms of performance, 1998 Audi A8 (300 HP) has 115 more horse power than 2004 BMW Z4. (185 HP). In normal driving conditions, 1998 Audi A8 should accelerate faster than 2004 BMW Z4.
Because 1998 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2004 BMW Z4. In wet, icy, snow, or gravel driving conditions, 1998 Audi A8 will offer significantly more control. 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, 1998 Audi A8 (400 Nm) has 155 more torque (in Nm) than 2004 BMW Z4. (245 Nm). This means 1998 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW Z4.
Compare all specifications:
| 1998 Audi A8 | 2004 BMW Z4 | |
| Make | Audi | BMW |
| Model | A8 | Z4 |
| Year Released | 1998 | 2004 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 2494 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 300 HP | 185 HP |
| Torque | 400 Nm | 245 Nm |
| Engine Bore Size | 84.6 mm | 84 mm |
| Engine Stroke Size | 93 mm | 75 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Top Speed | 250 km/hour | 235 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 5040 mm | 4100 mm |
| Vehicle Width | 1890 mm | 1790 mm |
| Vehicle Height | 1450 mm | 1300 mm |
| Wheelbase Size | 2890 mm | 2500 mm |
