2005 Audi A4 vs. 1999 BMW Z9
To start off, 2005 Audi A4 is newer by 6 year(s). Which means there will be less support and parts availability for 1999 BMW Z9. In addition, the cost of maintenance, including insurance, on 1999 BMW Z9 would be higher. At 4,397 cc (8 cylinders), 1999 BMW Z9 is equipped with a bigger engine. In terms of performance, 1999 BMW Z9 (242 HP @ 7400 RPM) has 22 more horse power than 2005 Audi A4. (220 HP @ 6300 RPM) In normal driving conditions, 1999 BMW Z9 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 15 kg more than 1999 BMW Z9.
Because 2005 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1999 BMW Z9. In wet, icy, snow, or gravel driving conditions, 2005 Audi A4 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, 1999 BMW Z9 (560 Nm @ 1750 RPM) has 260 more torque (in Nm) than 2005 Audi A4. (300 Nm @ 3200 RPM). This means 1999 BMW Z9 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
Compare all specifications:
| 2005 Audi A4 | 1999 BMW Z9 | |
| Make | Audi | BMW |
| Model | A4 | Z9 |
| Year Released | 2005 | 1999 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2983 cc | 4397 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 220 HP | 242 HP |
| Engine RPM | 6300 RPM | 7400 RPM |
| Torque | 300 Nm | 560 Nm |
| Torque RPM | 3200 RPM | 1750 RPM |
| Engine Compression Ratio | 10.1:1 | 18.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1645 kg | 1630 kg |
| Vehicle Length | 4550 mm | 5010 mm |
| Vehicle Width | 1770 mm | 1980 mm |
| Vehicle Height | 1430 mm | 1350 mm |
| Wheelbase Size | 2660 mm | 3060 mm |
