2005 Audi A6 vs. 2002 BMW Z4
To start off, 2005 Audi A6 is newer by 3 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 3,189 cc (6 cylinders), 2005 Audi A6 is equipped with a bigger engine. In terms of performance, 2002 BMW Z4 (227 HP @ 5900 RPM) has 9 more horse power than 2005 Audi A6. (218 HP @ 4000 RPM) In normal driving conditions, 2002 BMW Z4 should accelerate faster than 2005 Audi A6.
Because 2005 Audi A6 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, 2005 Audi A6 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, 2005 Audi A6 (400 Nm @ 1400 RPM) has 100 more torque (in Nm) than 2002 BMW Z4. (300 Nm @ 3500 RPM). This means 2005 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2002 BMW Z4.
Compare all specifications:
| 2005 Audi A6 | 2002 BMW Z4 | |
| Make | Audi | BMW |
| Model | A6 | Z4 |
| Year Released | 2005 | 2002 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3189 cc | 2996 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 218 HP | 227 HP |
| Engine RPM | 4000 RPM | 5900 RPM |
| Torque | 400 Nm | 300 Nm |
| Torque RPM | 1400 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 84 mm |
| Engine Stroke Size | 91.4 mm | 89.6 mm |
| Engine Compression Ratio | 17.0:1 | 10.2:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Length | 4940 mm | 4100 mm |
| Vehicle Width | 1870 mm | 1790 mm |
| Vehicle Height | 1460 mm | 1310 mm |
| Wheelbase Size | 2850 mm | 2500 mm |
| Fuel Tank Capacity | 70 L | 55 L |
