2009 Cadillac STS vs. 1984 Ford Sierra
To start off, 2009 Cadillac STS is newer by 25 year(s). Which means there will be less support and parts availability for 1984 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1984 Ford Sierra would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (321 HP @ 6400 RPM) has 246 more horse power than 1984 Ford Sierra. (75 HP @ 5300 RPM). In normal driving conditions, 2009 Cadillac STS should accelerate faster than 1984 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 780 kg more than 1984 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 1984 Ford Sierra. In wet, icy, snow, or gravel driving conditions, 2009 Cadillac STS will offer significantly more control. 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 308 more torque (in Nm) than 1984 Ford Sierra. (119 Nm @ 2900 RPM). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1984 Ford Sierra. 2009 Cadillac STS has automatic transmission and 1984 Ford Sierra has manual transmission. 1984 Ford Sierra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Cadillac STS | 1984 Ford Sierra | |
| Make | Cadillac | Ford |
| Model | STS | Sierra |
| Year Released | 2009 | 1984 |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 1608 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 321 HP | 75 HP |
| Engine RPM | 6400 RPM | 5300 RPM |
| Torque | 427 Nm | 119 Nm |
| Torque RPM | 4400 RPM | 2900 RPM |
| Engine Bore Size | 93 mm | 87.8 mm |
| Engine Stroke Size | 84 mm | 66 mm |
| Engine Compression Ratio | 10.5:1 | 9.2:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1820 kg | 1040 kg |
| Vehicle Length | 4990 mm | 4500 mm |
| Vehicle Width | 1850 mm | 1720 mm |
| Vehicle Height | 1470 mm | 1450 mm |
| Wheelbase Size | 2960 mm | 2610 mm |
| Fuel Tank Capacity | 66 L | 60 L |
