2006 BMW Z4 vs. 2004 Porsche Boxster
To start off, 2006 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2004 Porsche Boxster. In addition, the cost of maintenance, including insurance, on 2004 Porsche Boxster would be higher. At 2,999 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (255 HP @ 6600 RPM) has 19 more horse power than 2004 Porsche Boxster. (236 HP @ 6400 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2004 Porsche Boxster. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 479 kg more than 2004 Porsche Boxster. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2006 BMW Z4 (298 Nm @ 2750 RPM) has 28 more torque (in Nm) than 2004 Porsche Boxster. (270 Nm @ 4700 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2004 Porsche Boxster.
Compare all specifications:
| 2006 BMW Z4 | 2004 Porsche Boxster | |
| Make | BMW | Porsche |
| Model | Z4 | Boxster |
| Year Released | 2006 | 2004 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Middle |
| Engine Size | 2999 cc | 2687 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 255 HP | 236 HP |
| Engine RPM | 6600 RPM | 6400 RPM |
| Torque | 298 Nm | 270 Nm |
| Torque RPM | 2750 RPM | 4700 RPM |
| Engine Compression Ratio | 10.7:1 | 11.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1835 kg | 1356 kg |
| Vehicle Length | 4100 mm | 4340 mm |
| Vehicle Width | 1790 mm | 1810 mm |
| Vehicle Height | 1270 mm | 1300 mm |
| Wheelbase Size | 2500 mm | 2420 mm |
| Fuel Consumption | 7.8 L/100km | 7.8 L/100km |
| Fuel Consumption City | 11.8 L/100km | 15.2 L/100km |
| Fuel Consumption Overall | 9.8 L/100km | 10.5 L/100km |
| Fuel Tank Capacity | 55 L | 64 L |
