1999 BMW Z9 vs. 2005 BMW X5
To start off, 2005 BMW X5 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 27 more horse power than 2005 BMW X5. (215 HP @ 4000 RPM). In normal driving conditions, 1999 BMW Z9 should accelerate faster than 2005 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW X5 weights approximately 540 kg more than 1999 BMW Z9.
Because 2005 BMW X5 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 BMW X5 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 40 more torque (in Nm) than 2005 BMW X5. (520 Nm @ 2000 RPM). This means 1999 BMW Z9 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW X5.
Compare all specifications:
| 1999 BMW Z9 | 2005 BMW X5 | |
| Make | BMW | BMW |
| Model | Z9 | X5 |
| Year Released | 1999 | 2005 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 4397 cc | 2926 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 242 HP | 215 HP |
| Engine RPM | 7400 RPM | 4000 RPM |
| Torque | 560 Nm | 520 Nm |
| Torque RPM | 1750 RPM | 2000 RPM |
| Engine Compression Ratio | 18.0:1 | 18.0:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1630 kg | 2170 kg |
| Vehicle Length | 5010 mm | 4670 mm |
| Vehicle Width | 1980 mm | 1880 mm |
| Vehicle Height | 1350 mm | 1720 mm |
| Wheelbase Size | 3060 mm | 2830 mm |
