1999 BMW X5 vs. 2005 Mercedes-Benz SL
To start off, 2005 Mercedes-Benz SL is newer by 6 year(s). Which means there will be less support and parts availability for 1999 BMW X5. In addition, the cost of maintenance, including insurance, on 1999 BMW X5 would be higher. At 5,441 cc (8 cylinders), 2005 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz SL (493 HP @ 4200 RPM) has 211 more horse power than 1999 BMW X5. (282 HP @ 5400 RPM) In normal driving conditions, 2005 Mercedes-Benz SL should accelerate faster than 1999 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 1999 BMW X5 weights approximately 263 kg more than 2005 Mercedes-Benz SL.
Because 1999 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 1999 BMW X5 will offer significantly more control. 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 (700 Nm) has 261 more torque (in Nm) than 1999 BMW X5. (439 Nm). This means 2005 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 1999 BMW X5.
Compare all specifications:
| 1999 BMW X5 | 2005 Mercedes-Benz SL | |
| Make | BMW | Mercedes-Benz |
| Model | X5 | SL |
| Year Released | 1999 | 2005 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 5441 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 282 HP | 493 HP |
| Engine RPM | 5400 RPM | 4200 RPM |
| Torque | 439 Nm | 700 Nm |
| Engine Compression Ratio | 10.0:1 | 9.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2184 kg | 1921 kg |
| Vehicle Length | 4670 mm | 4540 mm |
| Vehicle Width | 1880 mm | 1820 mm |
| Vehicle Height | 1710 mm | 1300 mm |
| Wheelbase Size | 2730 mm | 2570 mm |
| Fuel Consumption | 11.1 L/100km | 11.8 L/100km |
| Fuel Consumption City | 18.8 L/100km | 16.8 L/100km |
| Fuel Consumption Overall | 13.9 L/100km | 14.7 L/100km |
| Fuel Tank Capacity | 93 L | 80 L |
