2004 BMW 645 vs. 2007 Mercedes-Benz S
To start off, 2007 Mercedes-Benz S is newer by 3 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 96 more horse power than 2007 Mercedes-Benz S. (232 HP @ 3800 RPM). In normal driving conditions, 2004 BMW 645 should accelerate faster than 2007 Mercedes-Benz S. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercedes-Benz S weights approximately 140 kg more than 2004 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 Mercedes-Benz S (540 Nm @ 1600 RPM) has 89 more torque (in Nm) than 2004 BMW 645. (451 Nm @ 3600 RPM). This means 2007 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 645. 2007 Mercedes-Benz S has automatic transmission and 2004 BMW 645 has manual transmission. 2004 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Mercedes-Benz S will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 BMW 645 | 2007 Mercedes-Benz S | |
| Make | BMW | Mercedes-Benz |
| Model | 645 | S |
| Year Released | 2004 | 2007 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2987 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 232 HP |
| Engine RPM | 6100 RPM | 3800 RPM |
| Torque | 451 Nm | 540 Nm |
| Torque RPM | 3600 RPM | 1600 RPM |
| Engine Bore Size | 92 mm | 83 mm |
| Engine Stroke Size | 82.7 mm | 92 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.1 seconds | 7.8 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1815 kg | 1955 kg |
| Vehicle Length | 4830 mm | 5080 mm |
| Vehicle Width | 1860 mm | 1880 mm |
| Vehicle Height | 1380 mm | 1480 mm |
| Wheelbase Size | 2790 mm | 3040 mm |
| Fuel Consumption Overall | 12.8 L/100km | 8.3 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
