2003 BMW 520 vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 BMW 520. In addition, the cost of maintenance, including insurance, on 2003 BMW 520 would be higher. At 2,171 cc (6 cylinders), 2003 BMW 520 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (168 HP @ 6250 RPM) has 1 more horse power than 2003 BMW 520. (167 HP @ 6100 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2003 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 520 weights approximately 375 kg more than 2006 BMW Z4.
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, both vehicles can yield 210 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles. 2003 BMW 520 has automatic transmission and 2006 BMW Z4 has manual transmission. 2006 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW 520 will be easier to drive especially in heavy traffic.
Compare all specifications:
2003 BMW 520 | 2006 BMW Z4 | |
Make | BMW | BMW |
Model | 520 | Z4 |
Year Released | 2003 | 2006 |
Body Type | Station Wagon | Convertible |
Engine Position | Front | Front |
Engine Size | 2171 cc | 2170 cc |
Engine Cylinders | 6 cylinders | 6 cylinders |
Engine Type | in-line | in-line |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 167 HP | 168 HP |
Engine RPM | 6100 RPM | 6250 RPM |
Torque | 210 Nm | 210 Nm |
Torque RPM | 3500 RPM | 3500 RPM |
Engine Bore Size | 80 mm | 80 mm |
Engine Stroke Size | 72 mm | 72 mm |
Engine Compression Ratio | 10.7:1 | 10.8:1 |
Top Speed | 217 km/hour | 225 km/hour |
Acceleration 0-100mph | 10.5 seconds | 7.7 seconds |
Drive Type | Rear | Rear |
Transmission Type | Automatic | Manual |
Number of Seats | 5 seats | 2 seats |
Number of Doors | 5 doors | 2 doors |
Vehicle Weight | 1700 kg | 1325 kg |
Vehicle Length | 4810 mm | 4100 mm |
Vehicle Width | 1810 mm | 1790 mm |
Vehicle Height | 1450 mm | 1310 mm |
Wheelbase Size | 2730 mm | 2500 mm |
Fuel Consumption Overall | 9.7 L/100km | 8.9 L/100km |
Fuel Tank Capacity | 70 L | 55 L |