2005 Audi A3 vs. 2005 Audi A4
To start off, both 2005 Audi A3 and 2005 Audi A4 were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 1,786 cc (4 cylinders), 2005 Audi A4 is equipped with a bigger engine. In terms of performance, 2005 Audi A4 (170 HP @ 6500 RPM) has 69 more horse power than 2005 Audi A3. (101 HP @ 6500 RPM) In normal driving conditions, 2005 Audi A4 should accelerate faster than 2005 Audi A3. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A4 weights approximately 385 kg more than 2005 Audi A3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Audi A3. In wet, icy, snow, or gravel driving conditions, 2005 Audi A4 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, 2005 Audi A4 (225 Nm) has 77 more torque (in Nm) than 2005 Audi A3. (148 Nm). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A3.
Compare all specifications:
| 2005 Audi A3 | 2005 Audi A4 | |
| Make | Audi | Audi |
| Model | A3 | A4 |
| Year Released | 2005 | 2005 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1596 cc | 1786 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 5 valves |
| Horse Power | 101 HP | 170 HP |
| Engine RPM | 6500 RPM | 6500 RPM |
| Torque | 148 Nm | 225 Nm |
| Engine Bore Size | 81 mm | 81 mm |
| Engine Stroke Size | 77.4 mm | 86 mm |
| Engine Compression Ratio | 10.5:1 | 9.3:1 |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 4 doors |
| Vehicle Weight | 1225 kg | 1610 kg |
| Vehicle Length | 4210 mm | 4550 mm |
| Vehicle Width | 1770 mm | 1770 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2440 mm | 2770 mm |
| Fuel Consumption Overall | 7 L/100km | 10.2 L/100km |
| Fuel Tank Capacity | 90 L | 66 L |
