2004 BMW 525 vs. 2007 BMW Z4
To start off, 2007 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2004 BMW 525. In addition, the cost of maintenance, including insurance, on 2004 BMW 525 would be higher. At 2,996 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (335 HP @ 7900 RPM) has 142 more horse power than 2004 BMW 525. (193 HP @ 6100 RPM) In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2004 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 525 weights approximately 346 kg more than 2007 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, 2007 BMW Z4 (315 Nm @ 2750 RPM) has 70 more torque (in Nm) than 2004 BMW 525. (245 Nm @ 3500 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 525. 2007 BMW Z4 has automatic transmission and 2004 BMW 525 has manual transmission. 2004 BMW 525 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW Z4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 BMW 525 | 2007 BMW Z4 | |
| Make | BMW | BMW |
| Model | 525 | Z4 |
| Year Released | 2004 | 2007 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 2996 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 193 HP | 335 HP |
| Engine RPM | 6100 RPM | 7900 RPM |
| Torque | 245 Nm | 315 Nm |
| Torque RPM | 3500 RPM | 2750 RPM |
| Engine Compression Ratio | 10.5:1 | 11.5:1 |
| Acceleration 0-100mph | 8.2 seconds | 6.2 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1656 kg | 1310 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 | 9.8 L/100km | 9.5 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
