2004 BMW 520 vs. 1999 BMW Z9
To start off, 2004 BMW 520 is newer by 5 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 74 more horse power than 2004 BMW 520. (168 HP @ 6000 RPM) In normal driving conditions, 1999 BMW Z9 should accelerate faster than 2004 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 520 weights approximately 40 kg more than 1999 BMW Z9.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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, 1999 BMW Z9 (560 Nm @ 1750 RPM) has 350 more torque (in Nm) than 2004 BMW 520. (210 Nm @ 3500 RPM). This means 1999 BMW Z9 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 520.
Compare all specifications:
| 2004 BMW 520 | 1999 BMW Z9 | |
| Make | BMW | BMW |
| Model | 520 | Z9 |
| Year Released | 2004 | 1999 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 4397 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 168 HP | 242 HP |
| Engine RPM | 6000 RPM | 7400 RPM |
| Torque | 210 Nm | 560 Nm |
| Torque RPM | 3500 RPM | 1750 RPM |
| Engine Compression Ratio | 10.0:1 | 18.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1670 kg | 1630 kg |
| Vehicle Length | 4810 mm | 5010 mm |
| Vehicle Width | 1810 mm | 1980 mm |
| Vehicle Height | 1450 mm | 1350 mm |
| Wheelbase Size | 2840 mm | 3060 mm |
