2005 Cadillac STS vs. 1978 Fiat 131
To start off, 2005 Cadillac STS is newer by 27 year(s). Which means there will be less support and parts availability for 1978 Fiat 131. In addition, the cost of maintenance, including insurance, on 1978 Fiat 131 would be higher. At 3,562 cc (6 cylinders), 2005 Cadillac STS is equipped with a bigger engine. In terms of performance, 2005 Cadillac STS (252 HP @ 6500 RPM) has 177 more horse power than 1978 Fiat 131. (75 HP @ 4200 RPM). In normal driving conditions, 2005 Cadillac STS should accelerate faster than 1978 Fiat 131. With that said, vehicle weight also plays an important factor in acceleration. 2005 Cadillac STS weights approximately 600 kg more than 1978 Fiat 131. 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 (342 Nm @ 3200 RPM) has 198 more torque (in Nm) than 1978 Fiat 131. (144 Nm @ 2400 RPM). This means 2005 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1978 Fiat 131. 2005 Cadillac STS has automatic transmission and 1978 Fiat 131 has manual transmission. 1978 Fiat 131 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 | 1978 Fiat 131 | |
| Make | Cadillac | Fiat |
| Model | STS | 131 |
| Year Released | 2005 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 3562 cc | 2444 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 252 HP | 75 HP |
| Engine RPM | 6500 RPM | 4200 RPM |
| Torque | 342 Nm | 144 Nm |
| Torque RPM | 3200 RPM | 2400 RPM |
| Engine Bore Size | 94 mm | 93 mm |
| Engine Stroke Size | 86 mm | 90 mm |
| Engine Compression Ratio | 10.2:1 | 22.0:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1790 kg | 1190 kg |
| Vehicle Length | 4990 mm | 4270 mm |
| Vehicle Width | 1850 mm | 1660 mm |
| Vehicle Height | 1470 mm | 1370 mm |
| Wheelbase Size | 2690 mm | 2500 mm |
