2007 Audi A4 vs. 2003 BMW 645
To start off, 2007 Audi A4 is newer by 4 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 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (310 HP @ 6000 RPM) has 55 more horse power than 2007 Audi A4. (255 HP @ 6500 RPM) In normal driving conditions, 2003 BMW 645 should accelerate faster than 2007 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 182 kg more than 2003 BMW 645.
Because 2007 Audi A4 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, 2007 Audi A4 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 119 more torque (in Nm) than 2007 Audi A4. (331 Nm @ 3250 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A4.
Compare all specifications:
2007 Audi A4 | 2003 BMW 645 | |
Make | Audi | BMW |
Model | A4 | 645 |
Year Released | 2007 | 2003 |
Body Type | Sedan | Coupe |
Engine Position | Front | Front |
Engine Size | 3123 cc | 4398 cc |
Engine Cylinders | 6 cylinders | 8 cylinders |
Engine Type | V | V |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 255 HP | 310 HP |
Engine RPM | 6500 RPM | 6000 RPM |
Torque | 331 Nm | 450 Nm |
Torque RPM | 3250 RPM | 3600 RPM |
Engine Bore Size | 84 mm | 92 mm |
Engine Stroke Size | 96 mm | 82.7 mm |
Drive Type | 4WD | Rear |
Transmission Type | Automatic | Automatic |
Number of Seats | 5 seats | 4 seats |
Number of Doors | 4 doors | 2 doors |
Vehicle Weight | 1880 kg | 1698 kg |
Vehicle Length | 4590 mm | 4830 mm |
Vehicle Width | 1780 mm | 1860 mm |
Vehicle Height | 1430 mm | 1380 mm |
Wheelbase Size | 2660 mm | 2790 mm |
Fuel Consumption Highway | 8.7 L/100km | 8 L/100km |
Fuel Consumption City | 12.4 L/100km | 16.1 L/100km |
Fuel Consumption Overall | 10.7 L/100km | 10.9 L/100km |
Fuel Tank Capacity | 63 L | 70 L |