2006 Cadillac STS vs. 1989 Ford Sierra
To start off, 2006 Cadillac STS is newer by 17 year(s). Which means there will be less support and parts availability for 1989 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1989 Ford Sierra would be higher. At 3,563 cc (6 cylinders), 2006 Cadillac STS is equipped with a bigger engine. In terms of performance, 2006 Cadillac STS (253 HP @ 6500 RPM) has 128 more horse power than 1989 Ford Sierra. (125 HP @ 5600 RPM). In normal driving conditions, 2006 Cadillac STS should accelerate faster than 1989 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2006 Cadillac STS weights approximately 654 kg more than 1989 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, 2006 Cadillac STS (342 Nm @ 3200 RPM) has 168 more torque (in Nm) than 1989 Ford Sierra. (174 Nm @ 2500 RPM). This means 2006 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1989 Ford Sierra. 2006 Cadillac STS has automatic transmission and 1989 Ford Sierra has manual transmission. 1989 Ford Sierra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Cadillac STS | 1989 Ford Sierra | |
| Make | Cadillac | Ford |
| Model | STS | Sierra |
| Year Released | 2006 | 1989 |
| Engine Position | Front | Front |
| Engine Size | 3563 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 253 HP | 125 HP |
| Engine RPM | 6500 RPM | 5600 RPM |
| Torque | 342 Nm | 174 Nm |
| Torque RPM | 3200 RPM | 2500 RPM |
| Engine Bore Size | 94 mm | 86 mm |
| Engine Stroke Size | 85.6 mm | 86 mm |
| Engine Compression Ratio | 10.2:1 | 10.3:1 |
| Top Speed | 229 km/hour | 192 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1782 kg | 1128 kg |
| Vehicle Length | 4990 mm | 4470 mm |
| Vehicle Width | 1850 mm | 1710 mm |
| Vehicle Height | 1470 mm | 1380 mm |
| Wheelbase Size | 2960 mm | 2610 mm |
| Fuel Tank Capacity | 66 L | 60 L |
