2005 Audi A8 vs. 2003 BMW X Activity
To start off, 2005 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 BMW X Activity. In addition, the cost of maintenance, including insurance, on 2003 BMW X Activity would be higher. At 4,134 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (322 HP @ 3750 RPM) has 94 more horse power than 2003 BMW X Activity. (228 HP @ 5900 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2003 BMW X Activity. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 315 kg more than 2003 BMW X Activity. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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 A8 (650 Nm @ 1600 RPM) has 350 more torque (in Nm) than 2003 BMW X Activity. (300 Nm @ 3500 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW X Activity.
Compare all specifications:
| 2005 Audi A8 | 2003 BMW X Activity | |
| Make | Audi | BMW |
| Model | A8 | X Activity |
| Year Released | 2005 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 4134 cc | 2992 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 322 HP | 228 HP |
| Engine RPM | 3750 RPM | 5900 RPM |
| Torque | 650 Nm | 300 Nm |
| Torque RPM | 1600 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 84 mm |
| Engine Stroke Size | 95.5 mm | 89.6 mm |
| Engine Compression Ratio | 16.5:1 | 10.2:1 |
| Drive Type | 4WD | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1945 kg | 1630 kg |
| Vehicle Length | 5070 mm | 4560 mm |
| Wheelbase Size | 2950 mm | 2830 mm |
| Fuel Tank Capacity | 90 L | 63 L |
