2005 Cadillac STS vs. 1987 Ford Sierra
To start off, 2005 Cadillac STS is newer by 18 year(s). Which means there will be less support and parts availability for 1987 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1987 Ford Sierra would be higher. At 4,565 cc (8 cylinders), 2005 Cadillac STS is equipped with a bigger engine. In terms of performance, 2005 Cadillac STS (321 HP @ 6400 RPM) has 217 more horse power than 1987 Ford Sierra. (104 HP @ 5200 RPM). In normal driving conditions, 2005 Cadillac STS should accelerate faster than 1987 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Cadillac STS weights approximately 762 kg more than 1987 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 Cadillac STS (427 Nm @ 4400 RPM) has 267 more torque (in Nm) than 1987 Ford Sierra. (160 Nm @ 4000 RPM). This means 2005 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1987 Ford Sierra. 2005 Cadillac STS has automatic transmission and 1987 Ford Sierra has manual transmission. 1987 Ford Sierra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Cadillac STS | 1987 Ford Sierra | |
| Make | Cadillac | Ford |
| Model | STS | Sierra |
| Year Released | 2005 | 1987 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 1991 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 321 HP | 104 HP |
| Engine RPM | 6400 RPM | 5200 RPM |
| Torque | 427 Nm | 160 Nm |
| Torque RPM | 4400 RPM | 4000 RPM |
| Engine Bore Size | 93.1 mm | 90.8 mm |
| Engine Stroke Size | 84 mm | 77 mm |
| Engine Compression Ratio | 10.5:1 | 9.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1817 kg | 1055 kg |
| Vehicle Length | 4990 mm | 4500 mm |
| Vehicle Width | 1850 mm | 1680 mm |
| Vehicle Height | 1470 mm | 1400 mm |
| Wheelbase Size | 2960 mm | 2620 mm |
