2004 Mercedes-Benz Viano vs. 2007 BMW 645
To start off, 2007 BMW 645 is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Mercedes-Benz Viano. In addition, the cost of maintenance, including insurance, on 2004 Mercedes-Benz Viano would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. In terms of performance, 2007 BMW 645 (328 HP) has 220 more horse power than 2004 Mercedes-Benz Viano. (108 HP) In normal driving conditions, 2007 BMW 645 should accelerate faster than 2004 Mercedes-Benz Viano. With that said, vehicle weight also plays an important factor in acceleration. 2004 Mercedes-Benz Viano weights approximately 350 kg more than 2007 BMW 645.
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, 2007 BMW 645 (450 Nm @ 3600 RPM) has 180 more torque (in Nm) than 2004 Mercedes-Benz Viano. (270 Nm @ 1600 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2004 Mercedes-Benz Viano.
Compare all specifications:
| 2004 Mercedes-Benz Viano | 2007 BMW 645 | |
| Make | Mercedes-Benz | BMW |
| Model | Viano | 645 |
| Year Released | 2004 | 2007 |
| Body Type | Minivan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2148 cc | 4398 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 108 HP | 328 HP |
| Torque | 270 Nm | 450 Nm |
| Torque RPM | 1600 RPM | 3600 RPM |
| Engine Compression Ratio | 18.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 16.5 seconds | 5.6 seconds |
| Drive Type | Rear | Rear |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2040 kg | 1690 kg |
| Vehicle Length | 4750 mm | 4830 mm |
| Vehicle Width | 1910 mm | 1860 mm |
| Vehicle Height | 1880 mm | 1380 mm |
| Wheelbase Size | 3210 mm | 2790 mm |
| Fuel Consumption Overall | 8.9 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 75 L | 70 L |
