2008 Cadillac STS vs. 2005 Mercedes-Benz S
To start off, 2008 Cadillac STS is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz S would be higher. At 4,565 cc (8 cylinders), 2008 Cadillac STS is equipped with a bigger engine. In terms of performance, 2008 Cadillac STS (321 HP @ 6400 RPM) has 73 more horse power than 2005 Mercedes-Benz S. (248 HP @ 4000 RPM). In normal driving conditions, 2008 Cadillac STS should accelerate faster than 2005 Mercedes-Benz S. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz S weights approximately 228 kg more than 2008 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, 2005 Mercedes-Benz S (560 Nm @ 1700 RPM) has 133 more torque (in Nm) than 2008 Cadillac STS. (427 Nm @ 4400 RPM). This means 2005 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2008 Cadillac STS.
Compare all specifications:
| 2008 Cadillac STS | 2005 Mercedes-Benz S | |
| Make | Cadillac | Mercedes-Benz |
| Model | STS | S |
| Year Released | 2008 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 3997 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 321 HP | 248 HP |
| Engine RPM | 6400 RPM | 4000 RPM |
| Torque | 427 Nm | 560 Nm |
| Torque RPM | 4400 RPM | 1700 RPM |
| Engine Bore Size | 93 mm | 86 mm |
| Engine Stroke Size | 84 mm | 86 mm |
| Engine Compression Ratio | 10.5:1 | 19.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.5 seconds | 7.8 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1812 kg | 2040 kg |
| Vehicle Length | 4990 mm | 5160 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1470 mm | 1450 mm |
| Wheelbase Size | 2960 mm | 2970 mm |
| Fuel Consumption Overall | 14.5 L/100km | 9.6 L/100km |
| Fuel Tank Capacity | 66 L | 88 L |
