2009 BMW Z4 vs. 2003 Audi A6
To start off, 2009 BMW Z4 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Audi A6. In addition, the cost of maintenance, including insurance, on 2003 Audi A6 would be higher. At 3,244 cc (6 cylinders), 2009 BMW Z4 is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (338 HP @ 7900 RPM) has 121 more horse power than 2003 Audi A6. (217 HP @ 6300 RPM). In normal driving conditions, 2009 BMW Z4 should accelerate faster than 2003 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi A6 weights approximately 150 kg more than 2009 BMW Z4.
Because 2003 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2003 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, 2009 BMW Z4 (365 Nm @ 4900 RPM) has 45 more torque (in Nm) than 2003 Audi A6. (320 Nm @ 3200 RPM). This means 2009 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi A6. 2003 Audi A6 has automatic transmission and 2009 BMW Z4 has manual transmission. 2009 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Audi A6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 BMW Z4 | 2003 Audi A6 | |
| Make | BMW | Audi |
| Model | Z4 | A6 |
| Year Released | 2009 | 2003 |
| Body Type | Coupe | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3244 cc | 2976 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 338 HP | 217 HP |
| Engine RPM | 7900 RPM | 6300 RPM |
| Torque | 365 Nm | 320 Nm |
| Torque RPM | 4900 RPM | 3200 RPM |
| Engine Bore Size | 87 mm | 82.5 mm |
| Engine Stroke Size | 91 mm | 92.8 mm |
| Engine Compression Ratio | 11.5:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 238 km/hour |
| Acceleration 0-100mph | 5 seconds | 7.8 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1495 kg | 1645 kg |
| Vehicle Length | 4120 mm | 4800 mm |
| Vehicle Width | 1790 mm | 1820 mm |
| Vehicle Height | 1290 mm | 1460 mm |
| Wheelbase Size | 2500 mm | 2430 mm |
| Fuel Consumption Overall | 12.1 L/100km | 11.5 L/100km |
| Fuel Tank Capacity | 60 L | 70 L |
