2008 Mercedes-Benz GL vs. 2004 BMW 645
To start off, 2008 Mercedes-Benz GL is newer by 4 year(s). Which means there will be less support and parts availability for 2004 BMW 645. In addition, the cost of maintenance, including insurance, on 2004 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 25 more horse power than 2008 Mercedes-Benz GL. (303 HP @ 3600 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 2008 Mercedes-Benz GL. With that said, vehicle weight also plays an important factor in acceleration. 2008 Mercedes-Benz GL weights approximately 735 kg more than 2004 BMW 645.
Because 2008 Mercedes-Benz GL is four wheel drive (4WD), it will have significant more traction and grip than 2004 BMW 645. In wet, icy, snow, or gravel driving conditions, 2008 Mercedes-Benz GL 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, 2008 Mercedes-Benz GL (700 Nm @ 2200 RPM) has 249 more torque (in Nm) than 2004 BMW 645. (451 Nm @ 3600 RPM). This means 2008 Mercedes-Benz GL will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 645.
Compare all specifications:
| 2008 Mercedes-Benz GL | 2004 BMW 645 | |
| Make | Mercedes-Benz | BMW |
| Model | GL | 645 |
| Year Released | 2008 | 2004 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3996 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 303 HP | 328 HP |
| Engine RPM | 3600 RPM | 6100 RPM |
| Torque | 700 Nm | 451 Nm |
| Torque RPM | 2200 RPM | 3600 RPM |
| Engine Bore Size | 86 mm | 92 mm |
| Engine Stroke Size | 86 mm | 82.7 mm |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 230 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.2 seconds | 6.1 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2550 kg | 1815 kg |
| Vehicle Length | 5090 mm | 4830 mm |
| Vehicle Width | 1930 mm | 1860 mm |
| Vehicle Height | 1850 mm | 1380 mm |
| Wheelbase Size | 3080 mm | 2790 mm |
| Fuel Consumption Overall | 11.6 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 100 L | 70 L |
