2003 BMW 645 vs. 2006 GMC Envoy
To start off, 2006 GMC Envoy 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 5,358 cc (8 cylinders), 2006 GMC Envoy is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (321 HP @ 6100 RPM) has 21 more horse power than 2006 GMC Envoy. (300 HP @ 5200 RPM). In normal driving conditions, 2003 BMW 645 should accelerate faster than 2006 GMC Envoy. With that said, vehicle weight also plays an important factor in acceleration. 2006 GMC Envoy weights approximately 540 kg more than 2003 BMW 645.
Because 2006 GMC Envoy 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 GMC Envoy 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, 2003 BMW 645 (450 Nm @ 3600 RPM) has 3 more torque (in Nm) than 2006 GMC Envoy. (447 Nm @ 4000 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2006 GMC Envoy.
Compare all specifications:
| 2003 BMW 645 | 2006 GMC Envoy | |
| Make | BMW | GMC |
| Model | 645 | Envoy |
| Year Released | 2003 | 2006 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 5358 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 321 HP | 300 HP |
| Engine RPM | 6100 RPM | 5200 RPM |
| Torque | 450 Nm | 447 Nm |
| Torque RPM | 3600 RPM | 4000 RPM |
| Engine Bore Size | 92 mm | 96 mm |
| Engine Stroke Size | 82.7 mm | 92 mm |
| Engine Compression Ratio | 10.5:1 | 9.5:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 4 seats | 7 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1895 kg | 2435 kg |
| Vehicle Length | 4830 mm | 5280 mm |
| Vehicle Width | 1860 mm | 1900 mm |
| Vehicle Height | 1380 mm | 1920 mm |
| Wheelbase Size | 2790 mm | 3280 mm |
| Fuel Consumption | 8.5 L/100km | 11.8 L/100km |
| Fuel Consumption City | 16.8 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 11.5 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 70 L | 95 L |
