2009 Cadillac STS vs. 2003 Mercedes-Benz S
To start off, 2009 Cadillac STS is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 2003 Mercedes-Benz S would be higher. At 4,266 cc (8 cylinders), 2003 Mercedes-Benz S is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (302 HP @ 6300 RPM) has 26 more horse power than 2003 Mercedes-Benz S. (276 HP @ 5750 RPM). In normal driving conditions, 2009 Cadillac STS should accelerate faster than 2003 Mercedes-Benz S. With that said, vehicle weight also plays an important factor in acceleration. 2003 Mercedes-Benz S weights approximately 320 kg more than 2009 Cadillac STS.
Because 2003 Mercedes-Benz S is four wheel drive (4WD), it will have significant more traction and grip than 2009 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2003 Mercedes-Benz S 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, 2003 Mercedes-Benz S (400 Nm @ 3000 RPM) has 31 more torque (in Nm) than 2009 Cadillac STS. (369 Nm @ 5200 RPM). This means 2003 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2003 Mercedes-Benz S | |
| Make | Cadillac | Mercedes-Benz |
| Model | STS | S |
| Year Released | 2009 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3599 cc | 4266 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 302 HP | 276 HP |
| Engine RPM | 6300 RPM | 5750 RPM |
| Torque | 369 Nm | 400 Nm |
| Torque RPM | 5200 RPM | 3000 RPM |
| Engine Compression Ratio | 11.3:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1635 kg | 1955 kg |
| Vehicle Length | 5000 mm | 5050 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1470 mm | 1460 mm |
| Wheelbase Size | 2960 mm | 2860 mm |
| Fuel Consumption Overall | 11.8 L/100km | 12.5 L/100km |
| Fuel Tank Capacity | 64 L | 88 L |
