2009 Cadillac STS vs. 2010 Mercury Grand Marquis
To start off, 2010 Mercury Grand Marquis is newer by 1 year(s). Which means there will be less support and parts availability for 2009 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2009 Cadillac STS would be higher. At 4,600 cc (8 cylinders), 2010 Mercury Grand Marquis is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (302 HP @ 6300 RPM) has 78 more horse power than 2010 Mercury Grand Marquis. (224 HP @ 4800 RPM). In normal driving conditions, 2009 Cadillac STS should accelerate faster than 2010 Mercury Grand Marquis. With that said, vehicle weight also plays an important factor in acceleration. 2010 Mercury Grand Marquis weights approximately 232 kg more than 2009 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, 2010 Mercury Grand Marquis (372 Nm @ 4000 RPM) has 3 more torque (in Nm) than 2009 Cadillac STS. (369 Nm @ 5200 RPM). This means 2010 Mercury Grand Marquis will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2010 Mercury Grand Marquis | |
| Make | Cadillac | Mercury |
| Model | STS | Grand Marquis |
| Year Released | 2009 | 2010 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3599 cc | 4600 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 302 HP | 224 HP |
| Engine RPM | 6300 RPM | 4800 RPM |
| Torque | 369 Nm | 372 Nm |
| Torque RPM | 5200 RPM | 4000 RPM |
| Fuel Type | Gasoline | Flex Fuel |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1635 kg | 1867 kg |
| Vehicle Length | 5000 mm | 5385 mm |
| Vehicle Width | 1850 mm | 1989 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2960 mm | 2911 mm |
| Fuel Consumption | 9.1 L/100km | 9.8 L/100km |
| Fuel Consumption City | 13.8 L/100km | 14.7 L/100km |
| Fuel Tank Capacity | 64 L | 72 L |
