2008 BMW Z4 vs. 1999 BMW X5
To start off, 2008 BMW Z4 is newer by 9 year(s). Which means there will be less support and parts availability for 1999 BMW X5. In addition, the cost of maintenance, including insurance, on 1999 BMW X5 would be higher. At 4,398 cc (8 cylinders), 1999 BMW X5 is equipped with a bigger engine. In terms of performance, 1999 BMW X5 (282 HP @ 5400 RPM) has 21 more horse power than 2008 BMW Z4. (261 HP @ 6600 RPM) In normal driving conditions, 1999 BMW X5 should accelerate faster than 2008 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 1999 BMW X5 weights approximately 789 kg more than 2008 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1999 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 2008 BMW Z4. In wet, icy, snow, or gravel driving conditions, 1999 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 X5 (439 Nm @ 3600 RPM) has 123 more torque (in Nm) than 2008 BMW Z4. (316 Nm @ 2750 RPM). This means 1999 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW Z4. 1999 BMW X5 has automatic transmission and 2008 BMW Z4 has manual transmission. 2008 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1999 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW Z4 | 1999 BMW X5 | |
| Make | BMW | BMW |
| Model | Z4 | X5 |
| Year Released | 2008 | 1999 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 261 HP | 282 HP |
| Engine RPM | 6600 RPM | 5400 RPM |
| Torque | 316 Nm | 439 Nm |
| Torque RPM | 2750 RPM | 3600 RPM |
| Engine Bore Size | 85 mm | 92 mm |
| Engine Stroke Size | 88 mm | 82.7 mm |
| Top Speed | 250 km/hour | 207 km/hour |
| Acceleration 0-100mph | 5.7 seconds | 7.5 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1395 kg | 2184 kg |
| Vehicle Length | 4100 mm | 4670 mm |
| Vehicle Width | 1790 mm | 1880 mm |
| Vehicle Height | 1270 mm | 1710 mm |
| Wheelbase Size | 2500 mm | 2730 mm |
| Fuel Consumption | 8.4 L/100km | 11.1 L/100km |
| Fuel Consumption City | 13.1 L/100km | 18.8 L/100km |
| Fuel Consumption Overall | 8.9 L/100km | 13.9 L/100km |
| Fuel Tank Capacity | 55 L | 93 L |
