2009 Audi A4 vs. 1991 Rover 100
To start off, 2009 Audi A4 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Rover 100. In addition, the cost of maintenance, including insurance, on 1991 Rover 100 would be higher. At 1,779 cc (4 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (161 HP @ 5700 RPM) has 59 more horse power than 1991 Rover 100. (102 HP @ 6000 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1991 Rover 100. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 670 kg more than 1991 Rover 100. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 Audi A4 (225 Nm @ 1950 RPM) has 90 more torque (in Nm) than 1991 Rover 100. (135 Nm @ 5000 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Rover 100.
Compare all specifications:
| 2009 Audi A4 | 1991 Rover 100 | |
| Make | Audi | Rover |
| Model | A4 | 100 |
| Year Released | 2009 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1779 cc | 1396 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 161 HP | 102 HP |
| Engine RPM | 5700 RPM | 6000 RPM |
| Torque | 225 Nm | 135 Nm |
| Torque RPM | 1950 RPM | 5000 RPM |
| Engine Bore Size | 81 mm | 75 mm |
| Engine Stroke Size | 86.4 mm | 79 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Weight | 1540 kg | 870 kg |
| Vehicle Length | 4580 mm | 3530 mm |
| Vehicle Width | 1780 mm | 1570 mm |
| Vehicle Height | 1400 mm | 1380 mm |
