2008 BMW Z4 vs. 2007 BMW 523
To start off, 2008 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 BMW 523. In addition, the cost of maintenance, including insurance, on 2007 BMW 523 would be higher. At 3,246 cc (6 cylinders), 2008 BMW Z4 is equipped with a bigger engine. In terms of performance, 2008 BMW Z4 (338 HP @ 7900 RPM) has 163 more horse power than 2007 BMW 523. (175 HP @ 5800 RPM). In normal driving conditions, 2008 BMW Z4 should accelerate faster than 2007 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 523 weights approximately 80 kg more than 2008 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, 2008 BMW Z4 (365 Nm @ 4900 RPM) has 135 more torque (in Nm) than 2007 BMW 523. (230 Nm @ 3500 RPM). This means 2008 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 523.
Compare all specifications:
| 2008 BMW Z4 | 2007 BMW 523 | |
| Make | BMW | BMW |
| Model | Z4 | 523 |
| Year Released | 2008 | 2007 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 175 HP |
| Engine RPM | 7900 RPM | 5800 RPM |
| Torque | 365 Nm | 230 Nm |
| Torque RPM | 4900 RPM | 3500 RPM |
| Engine Bore Size | 91 mm | 78.8 mm |
| Engine Stroke Size | 87 mm | 82 mm |
| Engine Compression Ratio | 11.5:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 250 km/hour | 235 km/hour |
| Acceleration 0-100mph | 5 seconds | 8.8 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1485 kg | 1565 kg |
| Vehicle Length | 4870 mm | 4850 mm |
| Vehicle Height | 1480 mm | 1470 mm |
| Wheelbase Size | 2500 mm | 2890 mm |
| Fuel Consumption Overall | 12.1 L/100km | 8.5 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
