1999 Audi A6 vs. 2009 Audi A4
To start off, 2009 Audi A4 is newer by 10 year(s). Which means there will be less support and parts availability for 1999 Audi A6. In addition, the cost of maintenance, including insurance, on 1999 Audi A6 would be higher. At 1,984 cc (4 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (200 HP @ 5100 RPM) has 51 more horse power than 1999 Audi A6. (149 HP @ 5700 RPM) In normal driving conditions, 2009 Audi A4 should accelerate faster than 1999 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 1999 Audi A6 weights approximately 350 kg more than 2009 Audi A4.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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 (281 Nm @ 1800 RPM) has 71 more torque (in Nm) than 1999 Audi A6. (210 Nm @ 1750 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A6.
Compare all specifications:
| 1999 Audi A6 | 2009 Audi A4 | |
| Make | Audi | Audi |
| Model | A6 | A4 |
| Year Released | 1999 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 1984 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 149 HP | 200 HP |
| Engine RPM | 5700 RPM | 5100 RPM |
| Torque | 210 Nm | 281 Nm |
| Torque RPM | 1750 RPM | 1800 RPM |
| Engine Bore Size | 81 mm | 82.5 mm |
| Engine Stroke Size | 86.4 mm | 92.8 mm |
| Engine Compression Ratio | 9.5:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1380 kg | 1030 kg |
| Vehicle Length | 4800 mm | 4580 mm |
| Vehicle Width | 1820 mm | 1780 mm |
| Vehicle Height | 1460 mm | 1400 mm |
| Wheelbase Size | 2850 mm | 2660 mm |
| Fuel Consumption Overall | 13 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
