2005 Audi A6 vs. 2009 BMW Z4
To start off, 2009 BMW Z4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Audi A6. In addition, the cost of maintenance, including insurance, on 2005 Audi A6 would be higher. At 2,496 cc, 2005 Audi A6 is equipped with a bigger engine. In terms of performance, 2005 Audi A6 (162 HP @ 4000 RPM) has 14 more horse power than 2009 BMW Z4. (148 HP @ 6200 RPM). In normal driving conditions, 2005 Audi A6 should accelerate faster than 2009 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A6 weights approximately 295 kg more than 2009 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW Z4 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2009 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2005 Audi A6, being front wheel drive (FWD), will offer much better control with better grip. 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 (310 Nm @ 1400 RPM) has 110 more torque (in Nm) than 2009 BMW Z4. (200 Nm @ 3600 RPM). This means 2005 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW Z4. 2005 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. 2005 Audi A6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi A6 | 2009 BMW Z4 | |
| Make | Audi | BMW |
| Model | A6 | Z4 |
| Year Released | 2005 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 1995 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 162 HP | 148 HP |
| Engine RPM | 4000 RPM | 6200 RPM |
| Torque | 310 Nm | 200 Nm |
| Torque RPM | 1400 RPM | 3600 RPM |
| Engine Compression Ratio | 19.5:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 217 km/hour | 215 km/hour |
| Acceleration 0-100mph | 9.3 seconds | 8.2 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1590 kg | 1295 kg |
| Wheelbase Size | 2770 mm | 2500 mm |
| Fuel Consumption Overall | 6.9 L/100km | 7.5 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
