2009 Jeep Grand Cherokee vs. 2007 BMW 645
To start off, 2009 Jeep Grand Cherokee is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW 645. In addition, the cost of maintenance, including insurance, on 2007 BMW 645 would be higher. At 5,654 cc (8 cylinders), 2009 Jeep Grand Cherokee is equipped with a bigger engine. In terms of performance, 2009 Jeep Grand Cherokee (381 HP @ 5600 RPM) has 53 more horse power than 2007 BMW 645. (328 HP @ 6100 RPM). In normal driving conditions, 2009 Jeep Grand Cherokee should accelerate faster than 2007 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2009 Jeep Grand Cherokee weights approximately 138 kg more than 2007 BMW 645. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Jeep Grand Cherokee is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 645. In wet, icy, snow, or gravel driving conditions, 2009 Jeep Grand Cherokee 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, 2009 Jeep Grand Cherokee (548 Nm @ 4000 RPM) has 98 more torque (in Nm) than 2007 BMW 645. (450 Nm @ 3600 RPM). This means 2009 Jeep Grand Cherokee will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 645.
Compare all specifications:
| 2009 Jeep Grand Cherokee | 2007 BMW 645 | |
| Make | Jeep | BMW |
| Model | Grand Cherokee | 645 |
| Year Released | 2009 | 2007 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5654 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 381 HP | 328 HP |
| Engine RPM | 5600 RPM | 6100 RPM |
| Torque | 548 Nm | 450 Nm |
| Torque RPM | 4000 RPM | 3600 RPM |
| Engine Compression Ratio | 9.6:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1828 kg | 1690 kg |
| Vehicle Length | 4780 mm | 4830 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1760 mm | 1380 mm |
| Wheelbase Size | 2790 mm | 2790 mm |
| Fuel Consumption Overall | 14.7 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 80 L | 70 L |
