2009 Audi A4 vs. 1999 Audi A6
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 1,798 cc (4 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (158 HP @ 4500 RPM) has 35 more horse power than 1999 Audi A6. (123 HP @ 5800 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 515 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 (250 Nm @ 1500 RPM) has 82 more torque (in Nm) than 1999 Audi A6. (168 Nm @ 3500 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A6. 2009 Audi A4 has automatic transmission and 1999 Audi A6 has manual transmission. 1999 Audi A6 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 1999 Audi A6 | |
| Make | Audi | Audi |
| Model | A4 | A6 |
| Year Released | 2009 | 1999 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1798 cc | 1781 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 158 HP | 123 HP |
| Engine RPM | 4500 RPM | 5800 RPM |
| Torque | 250 Nm | 168 Nm |
| Torque RPM | 1500 RPM | 3500 RPM |
| Engine Compression Ratio | 9.6:1 | 10.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 930 kg | 1445 kg |
| Vehicle Length | 4710 mm | 4800 mm |
| Vehicle Width | 2010 mm | 1820 mm |
| Vehicle Height | 1430 mm | 1460 mm |
| Wheelbase Size | 2810 mm | 2760 mm |
