2007 Audi A3 vs. 2009 Audi A8
To start off, 2009 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A3. In addition, the cost of maintenance, including insurance, on 2007 Audi A3 would be higher. At 4,163 cc (8 cylinders), 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (350 HP @ 6800 RPM) has 149 more horse power than 2007 Audi A3. (201 HP @ 5100 RPM) In normal driving conditions, 2009 Audi A8 should accelerate faster than 2007 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A3 weights approximately 246 kg more than 2009 Audi A8.
Because 2009 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2007 Audi A3. 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 (441 Nm @ 3500 RPM) has 160 more torque (in Nm) than 2007 Audi A3. (281 Nm @ 1800 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A3. 2009 Audi A8 has automatic transmission and 2007 Audi A3 has manual transmission. 2007 Audi A3 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:
| 2007 Audi A3 | 2009 Audi A8 | |
| Make | Audi | Audi |
| Model | A3 | A8 |
| Year Released | 2007 | 2009 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1999 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 201 HP | 350 HP |
| Engine RPM | 5100 RPM | 6800 RPM |
| Torque | 281 Nm | 441 Nm |
| Torque RPM | 1800 RPM | 3500 RPM |
| Engine Bore Size | 82.5 mm | 84.5 mm |
| Engine Stroke Size | 92.8 mm | 92.8 mm |
| Engine Compression Ratio | 10.5:1 | 12.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1410 kg | 1164 kg |
| Vehicle Length | 4290 mm | 5200 mm |
| Vehicle Width | 1960 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1460 mm |
| Wheelbase Size | 2580 mm | 3080 mm |
| Fuel Consumption Overall | 7.7 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 55 L | 90 L |
