2005 Cadillac STS vs. 1985 Ford Sierra
To start off, 2005 Cadillac STS is newer by 20 year(s). Which means there will be less support and parts availability for 1985 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1985 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 173 more horse power than 1985 Ford Sierra. (148 HP @ 5700 RPM). In normal driving conditions, 2005 Cadillac STS should accelerate faster than 1985 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2005 Cadillac STS weights approximately 612 kg more than 1985 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Cadillac STS (427 Nm @ 4400 RPM) has 207 more torque (in Nm) than 1985 Ford Sierra. (220 Nm @ 3800 RPM). This means 2005 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1985 Ford Sierra.
Compare all specifications:
| 2005 Cadillac STS | 1985 Ford Sierra | |
| Make | Cadillac | Ford |
| Model | STS | Sierra |
| Year Released | 2005 | 1985 |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 2790 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 321 HP | 148 HP |
| Engine RPM | 6400 RPM | 5700 RPM |
| Torque | 427 Nm | 220 Nm |
| Torque RPM | 4400 RPM | 3800 RPM |
| Engine Bore Size | 93.1 mm | 93 mm |
| Engine Stroke Size | 84 mm | 68.5 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Vehicle Weight | 1817 kg | 1205 kg |
| Vehicle Length | 4990 mm | 4400 mm |
| Vehicle Width | 1850 mm | 1680 mm |
| Vehicle Height | 1470 mm | 1370 mm |
| Wheelbase Size | 2960 mm | 2620 mm |
