1999 Audi A4 vs. 2009 Audi A8
To start off, 2009 Audi A8 is newer by 10 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 3,123 cc (6 cylinders), 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (256 HP) has 9 more horse power than 1999 Audi A4. (247 HP) In normal driving conditions, 2009 Audi A8 should accelerate faster than 1999 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi A4 weights approximately 40 kg more than 2009 Audi A8.
Because 2009 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, 2009 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, 2009 Audi A8 (330 Nm @ 3250 RPM) has 10 more torque (in Nm) than 1999 Audi A4. (320 Nm @ 3800 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4. 2009 Audi A8 has automatic transmission and 1999 Audi A4 has manual transmission. 1999 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Audi A4 | 2009 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 1999 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1595 cc | 3123 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 247 HP | 256 HP |
| Torque | 320 Nm | 330 Nm |
| Torque RPM | 3800 RPM | 3250 RPM |
| Engine Compression Ratio | 10.3:1 | 13.0:1 |
| Top Speed | 190 km/hour | 245 km/hour |
| Acceleration 0-100mph | 12.7 seconds | 7.7 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1200 kg | 1160 kg |
| Vehicle Length | 4480 mm | 5060 mm |
| Vehicle Width | 1740 mm | 1900 mm |
| Vehicle Height | 1420 mm | 1450 mm |
| Wheelbase Size | 2620 mm | 2950 mm |
| Fuel Tank Capacity | 62 L | 90 L |
