2009 Cadillac STS vs. 2005 Mercedes-Benz SL
To start off, 2009 Cadillac STS is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz SL would be higher. At 5,980 cc (12 cylinders), 2005 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz SL (604 HP @ 4200 RPM) has 283 more horse power than 2009 Cadillac STS. (321 HP @ 6400 RPM) In normal driving conditions, 2005 Mercedes-Benz SL should accelerate faster than 2009 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz SL weights approximately 240 kg more than 2009 Cadillac STS. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 2005 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 2009 Cadillac STS 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, 2005 Mercedes-Benz SL (1,001 Nm) has 574 more torque (in Nm) than 2009 Cadillac STS. (427 Nm). This means 2005 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2005 Mercedes-Benz SL | |
| Make | Cadillac | Mercedes-Benz |
| Model | STS | SL |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 5980 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 321 HP | 604 HP |
| Engine RPM | 6400 RPM | 4200 RPM |
| Torque | 427 Nm | 1001 Nm |
| Engine Bore Size | 93 mm | 83 mm |
| Engine Stroke Size | 84 mm | 93 mm |
| Engine Compression Ratio | 10.5:1 | 9.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1820 kg | 2060 kg |
| Vehicle Length | 4990 mm | 4540 mm |
| Vehicle Width | 1850 mm | 1820 mm |
| Vehicle Height | 1470 mm | 1300 mm |
| Wheelbase Size | 2960 mm | 2570 mm |
| Fuel Consumption | 9.1 L/100km | 12.4 L/100km |
| Fuel Consumption City | 13.8 L/100km | 19.6 L/100km |
| Fuel Consumption Overall | 16.8 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 66 L | 80 L |
