2009 Audi Q7 vs. 1991 Rover 400
To start off, 2009 Audi Q7 is newer by 18 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 2,967 cc (6 cylinders), 2009 Audi Q7 is equipped with a bigger engine. In terms of performance, 2009 Audi Q7 (237 HP @ 4000 RPM) has 143 more horse power than 1991 Rover 400. (94 HP @ 6250 RPM). In normal driving conditions, 2009 Audi Q7 should accelerate faster than 1991 Rover 400. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi Q7 weights approximately 1350 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 2009 Audi Q7 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, 2009 Audi Q7 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, 2009 Audi Q7 (550 Nm @ 2000 RPM) has 426 more torque (in Nm) than 1991 Rover 400. (124 Nm @ 4000 RPM). This means 2009 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 1991 Rover 400. 2009 Audi Q7 has automatic transmission and 1991 Rover 400 has manual transmission. 1991 Rover 400 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi Q7 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi Q7 | 1991 Rover 400 | |
| Make | Audi | Rover |
| Model | Q7 | 400 |
| Year Released | 2009 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 1395 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 94 HP |
| Engine RPM | 4000 RPM | 6250 RPM |
| Torque | 550 Nm | 124 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 83.1 mm | 75 mm |
| Engine Stroke Size | 91.4 mm | 79 mm |
| Engine Compression Ratio | 17.0:1 | 9.5:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Vehicle Weight | 2370 kg | 1020 kg |
| Vehicle Length | 5090 mm | 4370 mm |
| Vehicle Width | 1990 mm | 1690 mm |
| Vehicle Height | 1740 mm | 1410 mm |
| Wheelbase Size | 3010 mm | 2560 mm |
