2008 Audi Q7 vs. 1991 Mercedes-Benz 400
To start off, 2008 Audi Q7 is newer by 17 year(s). Which means there will be less support and parts availability for 1991 Mercedes-Benz 400. In addition, the cost of maintenance, including insurance, on 1991 Mercedes-Benz 400 would be higher. At 4,196 cc (8 cylinders), 1991 Mercedes-Benz 400 is equipped with a bigger engine. In terms of performance, 2008 Audi Q7 (345 HP @ 6800 RPM) has 58 more horse power than 1991 Mercedes-Benz 400. (287 HP @ 5700 RPM). In normal driving conditions, 2008 Audi Q7 should accelerate faster than 1991 Mercedes-Benz 400. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi Q7 weights approximately 240 kg more than 1991 Mercedes-Benz 400. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi Q7 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Mercedes-Benz 400. In wet, icy, snow, or gravel driving conditions, 2008 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, 2008 Audi Q7 (440 Nm @ 3500 RPM) has 30 more torque (in Nm) than 1991 Mercedes-Benz 400. (410 Nm @ 3900 RPM). This means 2008 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 1991 Mercedes-Benz 400.
Compare all specifications:
| 2008 Audi Q7 | 1991 Mercedes-Benz 400 | |
| Make | Audi | Mercedes-Benz |
| Model | Q7 | 400 |
| Year Released | 2008 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4196 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 345 HP | 287 HP |
| Engine RPM | 6800 RPM | 5700 RPM |
| Torque | 440 Nm | 410 Nm |
| Torque RPM | 3500 RPM | 3900 RPM |
| Engine Bore Size | 84.5 mm | 92 mm |
| Engine Stroke Size | 92.8 mm | 78.9 mm |
| Top Speed | 244 km/hour | 232 km/hour |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2240 kg | 2000 kg |
| Vehicle Length | 5090 mm | 5110 mm |
| Vehicle Width | 1990 mm | 1890 mm |
| Vehicle Height | 1740 mm | 1500 mm |
| Wheelbase Size | 3010 mm | 3050 mm |
