2007 Audi A3 vs. 2005 Opel Signum
To start off, 2007 Audi A3 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Opel Signum. In addition, the cost of maintenance, including insurance, on 2005 Opel Signum would be higher. At 3,195 cc (6 cylinders), 2007 Audi A3 is equipped with a bigger engine. In terms of performance, 2007 Audi A3 (251 HP @ 6300 RPM) has 76 more horse power than 2005 Opel Signum. (175 HP @ 4000 RPM). In normal driving conditions, 2007 Audi A3 should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Signum weights approximately 215 kg more than 2007 Audi A3.
Because 2007 Audi A3 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Opel Signum. In wet, icy, snow, or gravel driving conditions, 2007 Audi A3 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 Opel Signum (370 Nm @ 1900 RPM) has 50 more torque (in Nm) than 2007 Audi A3. (320 Nm @ 2800 RPM). This means 2005 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A3.
Compare all specifications:
| 2007 Audi A3 | 2005 Opel Signum | |
| Make | Audi | Opel |
| Model | A3 | Signum |
| Year Released | 2007 | 2005 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3195 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 251 HP | 175 HP |
| Engine RPM | 6300 RPM | 4000 RPM |
| Torque | 320 Nm | 370 Nm |
| Torque RPM | 2800 RPM | 1900 RPM |
| Engine Bore Size | 84 mm | 87.5 mm |
| Engine Stroke Size | 95.9 mm | 82 mm |
| Engine Compression Ratio | 11.3:1 | 18.5:1 |
| Fuel Type | Diesel | Diesel |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1455 kg | 1670 kg |
| Vehicle Length | 4290 mm | 4640 mm |
| Vehicle Width | 1960 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2580 mm | 2620 mm |
| Fuel Consumption Overall | 10.2 L/100km | 7.6 L/100km |
| Fuel Tank Capacity | 55 L | 60 L |
