2007 Audi A4 vs. 1991 Opel Astra
To start off, 2007 Audi A4 is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Opel Astra. In addition, the cost of maintenance, including insurance, on 1991 Opel Astra would be higher. At 3,189 cc (6 cylinders), 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (252 HP @ 6500 RPM) has 152 more horse power than 1991 Opel Astra. (100 HP @ 5600 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 515 kg more than 1991 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2007 Audi A4 (331 Nm @ 3250 RPM) has 196 more torque (in Nm) than 1991 Opel Astra. (135 Nm @ 3400 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Opel Astra.
Compare all specifications:
| 2007 Audi A4 | 1991 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2007 | 1991 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3189 cc | 1597 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 252 HP | 100 HP |
| Engine RPM | 6500 RPM | 5600 RPM |
| Torque | 331 Nm | 135 Nm |
| Torque RPM | 3250 RPM | 3400 RPM |
| Engine Bore Size | 84.5 mm | 79 mm |
| Engine Stroke Size | 92.8 mm | 81.5 mm |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1610 kg | 1095 kg |
| Vehicle Length | 4550 mm | 4280 mm |
| Vehicle Width | 1780 mm | 1690 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2640 mm |
| Fuel Tank Capacity | 70 L | 52 L |
