2001 BMW Z18 vs. 2010 BMW 550
To start off, 2010 BMW 550 is newer by 9 year(s). Which means there will be less support and parts availability for 2001 BMW Z18. In addition, the cost of maintenance, including insurance, on 2001 BMW Z18 would be higher. Both 2001 BMW Z18 and 2010 BMW 550 are equipped with a 4,400 cc engine. In terms of performance, 2010 BMW 550 (400 HP @ 5500 RPM) has 77 more horse power than 2001 BMW Z18. (323 HP @ 7400 RPM) In normal driving conditions, 2010 BMW 550 should accelerate faster than 2001 BMW Z18.
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, 2010 BMW 550 (609 Nm) has 269 more torque (in Nm) than 2001 BMW Z18. (340 Nm). This means 2010 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2001 BMW Z18.
Compare all specifications:
| 2001 BMW Z18 | 2010 BMW 550 | |
| Make | BMW | BMW |
| Model | Z18 | 550 |
| Year Released | 2001 | 2010 |
| Engine Position | Front | Front |
| Engine Size | 4400 cc | 4400 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 323 HP | 400 HP |
| Engine RPM | 7400 RPM | 5500 RPM |
| Torque | 340 Nm | 609 Nm |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Wheelbase Size | 2730 mm | 3066 mm |
| Fuel Tank Capacity | 63 L | 70 L |
