2009 Cadillac STS vs. 1999 Mercury Cougar
To start off, 2009 Cadillac STS is newer by 10 year(s). Which means there will be less support and parts availability for 1999 Mercury Cougar. In addition, the cost of maintenance, including insurance, on 1999 Mercury Cougar would be higher. At 4,564 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (320 HP @ 6400 RPM) has 197 more horse power than 1999 Mercury Cougar. (123 HP @ 5500 RPM). In normal driving conditions, 2009 Cadillac STS should accelerate faster than 1999 Mercury Cougar. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 325 kg more than 1999 Mercury Cougar. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Cadillac STS is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2009 Cadillac STS. However, in wet, icy, snow, or gravel driving conditions, 1999 Mercury Cougar, being front wheel drive (FWD), will offer much better control with better grip. 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, 2009 Cadillac STS (427 Nm @ 4400 RPM) has 251 more torque (in Nm) than 1999 Mercury Cougar. (176 Nm @ 4000 RPM). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1999 Mercury Cougar.
Compare all specifications:
| 2009 Cadillac STS | 1999 Mercury Cougar | |
| Make | Cadillac | Mercury |
| Model | STS | Cougar |
| Year Released | 2009 | 1999 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4564 cc | 1983 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 320 HP | 123 HP |
| Engine RPM | 6400 RPM | 5500 RPM |
| Torque | 427 Nm | 176 Nm |
| Torque RPM | 4400 RPM | 4000 RPM |
| Engine Compression Ratio | 3.7:1 | 9.7:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1635 kg | 1310 kg |
| Vehicle Length | 5000 mm | 4710 mm |
| Vehicle Width | 1850 mm | 1770 mm |
| Vehicle Height | 1470 mm | 1330 mm |
| Wheelbase Size | 2960 mm | 2710 mm |
