2006 Audi A8 vs. 1991 Rover 400
To start off, 2006 Audi A8 is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Rover 400. In addition, the cost of maintenance, including insurance, on 1991 Rover 400 would be higher. At 5,997 cc, 2006 Audi A8 is equipped with a bigger engine. In terms of performance, 2006 Audi A8 (450 HP @ 6200 RPM) has 356 more horse power than 1991 Rover 400. (94 HP @ 6250 RPM). In normal driving conditions, 2006 Audi A8 should accelerate faster than 1991 Rover 400. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi A8 weights approximately 1125 kg more than 1991 Rover 400. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Rover 400. In wet, icy, snow, or gravel driving conditions, 2006 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, 2006 Audi A8 (580 Nm @ 4000 RPM) has 456 more torque (in Nm) than 1991 Rover 400. (124 Nm @ 4000 RPM). This means 2006 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1991 Rover 400.
Compare all specifications:
| 2006 Audi A8 | 1991 Rover 400 | |
| Make | Audi | Rover |
| Model | A8 | 400 |
| Year Released | 2006 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 5997 cc | 1395 cc |
| Engine Type | W | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 94 HP |
| Engine RPM | 6200 RPM | 6250 RPM |
| Torque | 580 Nm | 124 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 75 mm |
| Engine Stroke Size | 90.2 mm | 79 mm |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Front |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Weight | 2145 kg | 1020 kg |
| Vehicle Length | 5200 mm | 4370 mm |
| Vehicle Width | 1900 mm | 1690 mm |
| Vehicle Height | 1460 mm | 1410 mm |
| Wheelbase Size | 3080 mm | 2560 mm |
