2007 Audi A8 vs. 1991 Mercedes-Benz 400
To start off, 2007 Audi A8 is newer by 16 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 5,996 cc, 2007 Audi A8 is equipped with a bigger engine. In terms of performance, 2007 Audi A8 (444 HP @ 6200 RPM) has 157 more horse power than 1991 Mercedes-Benz 400. (287 HP @ 5700 RPM). In normal driving conditions, 2007 Audi A8 should accelerate faster than 1991 Mercedes-Benz 400. With that said, vehicle weight also plays an important factor in acceleration. 1991 Mercedes-Benz 400 weights approximately 5 kg more than 2007 Audi A8.
Because 2007 Audi A8 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, 2007 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, 2007 Audi A8 (580 Nm @ 4000 RPM) has 170 more torque (in Nm) than 1991 Mercedes-Benz 400. (410 Nm @ 3900 RPM). This means 2007 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1991 Mercedes-Benz 400.
Compare all specifications:
| 2007 Audi A8 | 1991 Mercedes-Benz 400 | |
| Make | Audi | Mercedes-Benz |
| Model | A8 | 400 |
| Year Released | 2007 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 5996 cc | 4196 cc |
| Engine Type | W | V |
| Horse Power | 444 HP | 287 HP |
| Engine RPM | 6200 RPM | 5700 RPM |
| Torque | 580 Nm | 410 Nm |
| Torque RPM | 4000 RPM | 3900 RPM |
| Engine Bore Size | 84 mm | 92 mm |
| Engine Stroke Size | 90.2 mm | 78.9 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Top Speed | 250 km/hour | 232 km/hour |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1995 kg | 2000 kg |
| Vehicle Length | 5070 mm | 5110 mm |
| Vehicle Width | 1900 mm | 1890 mm |
| Vehicle Height | 1450 mm | 1500 mm |
| Wheelbase Size | 3080 mm | 3050 mm |
