2005 BMW X5 vs. 1986 BMW Z1
To start off, 2005 BMW X5 is newer by 19 year(s). Which means there will be less support and parts availability for 1986 BMW Z1. In addition, the cost of maintenance, including insurance, on 1986 BMW Z1 would be higher. At 2,926 cc (6 cylinders), 2005 BMW X5 is equipped with a bigger engine. In terms of performance, 2005 BMW X5 (215 HP @ 4000 RPM) has 44 more horse power than 1986 BMW Z1. (171 HP @ 5800 RPM). In normal driving conditions, 2005 BMW X5 should accelerate faster than 1986 BMW Z1. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW X5 weights approximately 1172 kg more than 1986 BMW Z1. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1986 BMW Z1. 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, 2005 BMW X5 (520 Nm @ 2000 RPM) has 298 more torque (in Nm) than 1986 BMW Z1. (222 Nm @ 4000 RPM). This means 2005 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1986 BMW Z1.
Compare all specifications:
| 2005 BMW X5 | 1986 BMW Z1 | |
| Make | BMW | BMW |
| Model | X5 | Z1 |
| Year Released | 2005 | 1986 |
| Body Type | SUV | Roadster |
| Engine Position | Front | Front |
| Engine Size | 2926 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 215 HP | 171 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 520 Nm | 222 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Compression Ratio | 18.0:1 | 9.7:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 210 km/hour | 224 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2170 kg | 998 kg |
| Vehicle Length | 4670 mm | 3960 mm |
| Vehicle Width | 1880 mm | 1810 mm |
| Vehicle Height | 1720 mm | 1280 mm |
| Wheelbase Size | 2830 mm | 2440 mm |
| Fuel Tank Capacity | 93 L | 58 L |
