2009 Audi A8 vs. 2002 BMW Z4
To start off, 2009 Audi A8 is newer by 7 year(s). Which means there will be less support and parts availability for 2002 BMW Z4. In addition, the cost of maintenance, including insurance, on 2002 BMW Z4 would be higher. At 2,965 cc (6 cylinders), 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (230 HP @ 4000 RPM) has 37 more horse power than 2002 BMW Z4. (193 HP @ 6000 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2002 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2002 BMW Z4 weights approximately 435 kg more than 2009 Audi A8.
Because 2009 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2002 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi A8 (450 Nm @ 1400 RPM) has 205 more torque (in Nm) than 2002 BMW Z4. (245 Nm @ 3500 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2002 BMW Z4.
Compare all specifications:
| 2009 Audi A8 | 2002 BMW Z4 | |
| Make | Audi | BMW |
| Model | A8 | Z4 |
| Year Released | 2009 | 2002 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2965 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 230 HP | 193 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 450 Nm | 245 Nm |
| Torque RPM | 1400 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 84 mm |
| Engine Stroke Size | 91.4 mm | 75 mm |
| Engine Compression Ratio | 17.0:1 | 10.5:1 |
| Top Speed | 243 km/hour | 227 km/hour |
| Acceleration 0-100mph | 7.9 seconds | 7.8 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 930 kg | 1365 kg |
| Vehicle Length | 5190 mm | 4100 mm |
| Vehicle Width | 1900 mm | 1790 mm |
| Vehicle Height | 1450 mm | 1310 mm |
| Wheelbase Size | 3080 mm | 2450 mm |
| Fuel Consumption Overall | 8.4 L/100km | 9.5 L/100km |
| Fuel Tank Capacity | 90 L | 55 L |
