2005 Audi S4 vs. 1991 Mercedes-Benz 400
To start off, 2005 Audi S4 is newer by 14 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, 2005 Audi S4 (340 HP @ 6300 RPM) has 54 more horse power than 1991 Mercedes-Benz 400. (286 HP @ 5700 RPM). In normal driving conditions, 2005 Audi S4 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 164 kg more than 2005 Audi S4.
Let's talk about torque, both vehicles can yield 410 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles.
Compare all specifications:
| 2005 Audi S4 | 1991 Mercedes-Benz 400 | |
| Make | Audi | Mercedes-Benz |
| Model | S4 | 400 |
| Year Released | 2005 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 4196 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 340 HP | 286 HP |
| Engine RPM | 6300 RPM | 5700 RPM |
| Torque | 410 Nm | 410 Nm |
| Engine Bore Size | 85 mm | 92 mm |
| Engine Stroke Size | 93 mm | 78.9 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1840 kg | 2004 kg |
| Vehicle Length | 4580 mm | 5220 mm |
| Vehicle Width | 1780 mm | 1890 mm |
| Vehicle Height | 1400 mm | 1500 mm |
| Wheelbase Size | 2660 mm | 3150 mm |
