2001 Audi RS4 vs. 2009 BMW 635
To start off, 2009 BMW 635 is newer by 8 year(s). Which means there will be less support and parts availability for 2001 Audi RS4. In addition, the cost of maintenance, including insurance, on 2001 Audi RS4 would be higher. At 2,993 cc (6 cylinders), 2009 BMW 635 is equipped with a bigger engine. In terms of performance, 2001 Audi RS4 (377 HP @ 6300 RPM) has 95 more horse power than 2009 BMW 635. (282 HP @ 4400 RPM). In normal driving conditions, 2001 Audi RS4 should accelerate faster than 2009 BMW 635. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 635 weights approximately 140 kg more than 2001 Audi RS4.
Because 2001 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 635. In wet, icy, snow, or gravel driving conditions, 2001 Audi RS4 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 BMW 635 (581 Nm @ 1750 RPM) has 132 more torque (in Nm) than 2001 Audi RS4. (449 Nm @ 2500 RPM). This means 2009 BMW 635 will have an easier job in driving up hills or pulling heavy equipment than 2001 Audi RS4. 2009 BMW 635 has automatic transmission and 2001 Audi RS4 has manual transmission. 2001 Audi RS4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW 635 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2001 Audi RS4 | 2009 BMW 635 | |
| Make | Audi | BMW |
| Model | RS4 | 635 |
| Year Released | 2001 | 2009 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 2993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 377 HP | 282 HP |
| Engine RPM | 6300 RPM | 4400 RPM |
| Torque | 449 Nm | 581 Nm |
| Torque RPM | 2500 RPM | 1750 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1585 kg | 1725 kg |
| Vehicle Length | 4480 mm | 4830 mm |
| Vehicle Width | 1740 mm | 1860 mm |
| Vehicle Height | 1450 mm | 1380 mm |
| Wheelbase Size | 2610 mm | 2790 mm |
| Fuel Tank Capacity | 55 L | 70 L |
