2009 Audi A4 vs. 2001 Audi A8
To start off, 2009 Audi A4 is newer by 8 year(s). Which means there will be less support and parts availability for 2001 Audi A8. In addition, the cost of maintenance, including insurance, on 2001 Audi A8 would be higher. At 3,936 cc (8 cylinders), 2001 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (328 HP @ 5500 RPM) has 57 more horse power than 2001 Audi A8. (271 HP @ 3750 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2001 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2001 Audi A8 weights approximately 890 kg more than 2009 Audi A4.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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 Audi A4 (440 Nm @ 2900 RPM) has 110 more torque (in Nm) than 2001 Audi A8. (330 Nm @ 1800 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2001 Audi A8. 2001 Audi A8 has automatic transmission and 2009 Audi A4 has manual transmission. 2009 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2001 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 2001 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2009 | 2001 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2995 cc | 3936 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 271 HP |
| Engine RPM | 5500 RPM | 3750 RPM |
| Torque | 440 Nm | 330 Nm |
| Torque RPM | 2900 RPM | 1800 RPM |
| Engine Compression Ratio | 10.3:1 | 18.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Acceleration 0-100mph | 5.1 seconds | 6.8 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1650 kg | 2540 kg |
| Vehicle Length | 4720 mm | 5190 mm |
| Vehicle Width | 1830 mm | 1900 mm |
| Vehicle Height | 1410 mm | 1460 mm |
| Wheelbase Size | 2820 mm | 3080 mm |
