2004 BMW Z4 vs. 2005 Mercedes-Benz SL
To start off, 2005 Mercedes-Benz SL is newer by 1 year(s). Which means there will be less support and parts availability for 2004 BMW Z4. In addition, the cost of maintenance, including insurance, on 2004 BMW Z4 would be higher. At 5,506 cc (12 cylinders), 2005 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz SL (493 HP @ 4200 RPM) has 308 more horse power than 2004 BMW Z4. (185 HP @ 6000 RPM) In normal driving conditions, 2005 Mercedes-Benz SL should accelerate faster than 2004 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz SL weights approximately 713 kg more than 2004 BMW Z4. 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, 2005 Mercedes-Benz SL (800 Nm) has 555 more torque (in Nm) than 2004 BMW Z4. (245 Nm). This means 2005 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW Z4.
Compare all specifications:
| 2004 BMW Z4 | 2005 Mercedes-Benz SL | |
| Make | BMW | Mercedes-Benz |
| Model | Z4 | SL |
| Year Released | 2004 | 2005 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 5506 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 185 HP | 493 HP |
| Engine RPM | 6000 RPM | 4200 RPM |
| Torque | 245 Nm | 800 Nm |
| Engine Bore Size | 84 mm | 82 mm |
| Engine Stroke Size | 75 mm | 87 mm |
| Engine Compression Ratio | 11.0:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1296 kg | 2009 kg |
| Vehicle Length | 4100 mm | 4540 mm |
| Vehicle Width | 1790 mm | 1820 mm |
| Vehicle Height | 1300 mm | 1300 mm |
| Wheelbase Size | 2500 mm | 2570 mm |
| Fuel Consumption | 8.4 L/100km | 12.4 L/100km |
| Fuel Consumption City | 11.8 L/100km | 18.1 L/100km |
| Fuel Consumption Overall | 10.2 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 55 L | 80 L |
