2003 BMW 645 vs. 2006 Chevrolet Avalanche
To start off, 2006 Chevrolet Avalanche is newer by 3 year(s). Which means there will be less support and parts availability for 2003 BMW 645. In addition, the cost of maintenance, including insurance, on 2003 BMW 645 would be higher. At 8,127 cc (8 cylinders), 2006 Chevrolet Avalanche is equipped with a bigger engine. In terms of performance, 2006 Chevrolet Avalanche (325 HP @ 4200 RPM) has 4 more horse power than 2003 BMW 645. (321 HP @ 6100 RPM) In normal driving conditions, 2006 Chevrolet Avalanche should accelerate faster than 2003 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2006 Chevrolet Avalanche weights approximately 1089 kg more than 2003 BMW 645. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Chevrolet Avalanche is four wheel drive (4WD), it will have significant more traction and grip than 2003 BMW 645. In wet, icy, snow, or gravel driving conditions, 2006 Chevrolet Avalanche 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, 2006 Chevrolet Avalanche (606 Nm @ 3200 RPM) has 156 more torque (in Nm) than 2003 BMW 645. (450 Nm @ 3600 RPM). This means 2006 Chevrolet Avalanche will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW 645.
Compare all specifications:
| 2003 BMW 645 | 2006 Chevrolet Avalanche | |
| Make | BMW | Chevrolet |
| Model | 645 | Avalanche |
| Year Released | 2003 | 2006 |
| Body Type | Convertible | Pickup |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 8127 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 321 HP | 325 HP |
| Engine RPM | 6100 RPM | 4200 RPM |
| Torque | 450 Nm | 606 Nm |
| Torque RPM | 3600 RPM | 3200 RPM |
| Engine Compression Ratio | 10.5:1 | 10.1:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 6 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1895 kg | 2984 kg |
| Vehicle Length | 4830 mm | 5640 mm |
| Vehicle Width | 1860 mm | 2030 mm |
| Vehicle Height | 1380 mm | 1880 mm |
| Wheelbase Size | 2790 mm | 3310 mm |
| Fuel Consumption Overall | 11.5 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 70 L | 140 L |
