1999 Audi A4 vs. 2001 Audi A8
To start off, 2001 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 1999 Audi A4. In addition, the cost of maintenance, including insurance, on 1999 Audi A4 would be higher. At 3,936 cc (8 cylinders), 2001 Audi A8 is equipped with a bigger engine. In terms of performance, 2001 Audi A8 (271 HP @ 3750 RPM) has 23 more horse power than 1999 Audi A4. (248 HP @ 5700 RPM) In normal driving conditions, 2001 Audi A8 should accelerate faster than 1999 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2001 Audi A8 weights approximately 1240 kg more than 1999 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2001 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 1999 Audi A4. In wet, icy, snow, or gravel driving conditions, 2001 Audi A8 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, 2001 Audi A8 (330 Nm @ 1800 RPM) has 10 more torque (in Nm) than 1999 Audi A4. (320 Nm @ 1750 RPM). This means 2001 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4.
Compare all specifications:
| 1999 Audi A4 | 2001 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 1999 | 2001 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 3936 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 248 HP | 271 HP |
| Engine RPM | 5700 RPM | 3750 RPM |
| Torque | 320 Nm | 330 Nm |
| Torque RPM | 1750 RPM | 1800 RPM |
| Engine Compression Ratio | 9.5:1 | 18.0:1 |
| Top Speed | 214 km/hour | 245 km/hour |
| Acceleration 0-100mph | 9.6 seconds | 6.8 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1300 kg | 2540 kg |
| Vehicle Length | 4480 mm | 5190 mm |
| Vehicle Width | 1740 mm | 1900 mm |
| Vehicle Height | 1420 mm | 1460 mm |
| Wheelbase Size | 2620 mm | 3080 mm |
| Fuel Tank Capacity | 62 L | 90 L |
