2006 Cadillac STS vs. 1991 Mercedes-Benz 500
To start off, 2006 Cadillac STS is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Mercedes-Benz 500. In addition, the cost of maintenance, including insurance, on 1991 Mercedes-Benz 500 would be higher. At 4,973 cc (8 cylinders), 1991 Mercedes-Benz 500 is equipped with a bigger engine. In terms of performance, 1991 Mercedes-Benz 500 (326 HP @ 5700 RPM) has 6 more horse power than 2006 Cadillac STS. (320 HP @ 6400 RPM) In normal driving conditions, 1991 Mercedes-Benz 500 should accelerate faster than 2006 Cadillac STS.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 1991 Mercedes-Benz 500 (480 Nm @ 3900 RPM) has 52 more torque (in Nm) than 2006 Cadillac STS. (428 Nm @ 4400 RPM). This means 1991 Mercedes-Benz 500 will have an easier job in driving up hills or pulling heavy equipment than 2006 Cadillac STS.
Compare all specifications:
| 2006 Cadillac STS | 1991 Mercedes-Benz 500 | |
| Make | Cadillac | Mercedes-Benz |
| Model | STS | 500 |
| Year Released | 2006 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4556 cc | 4973 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 320 HP | 326 HP |
| Engine RPM | 6400 RPM | 5700 RPM |
| Torque | 428 Nm | 480 Nm |
| Torque RPM | 4400 RPM | 3900 RPM |
| Engine Bore Size | 93 mm | 96.5 mm |
| Engine Stroke Size | 84 mm | 85 mm |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4990 mm | 5110 mm |
| Vehicle Width | 1850 mm | 1890 mm |
| Vehicle Height | 1470 mm | 1500 mm |
| Wheelbase Size | 2960 mm | 3050 mm |
