2005 Cadillac STS vs. 1978 Avanti Avanti
To start off, 2005 Cadillac STS is newer by 27 year(s). Which means there will be less support and parts availability for 1978 Avanti Avanti. In addition, the cost of maintenance, including insurance, on 1978 Avanti Avanti would be higher. At 6,568 cc (8 cylinders), 1978 Avanti Avanti is equipped with a bigger engine. In terms of performance, 2005 Cadillac STS (255 HP @ 6500 RPM) has 78 more horse power than 1978 Avanti Avanti. (177 HP @ 3400 RPM). In normal driving conditions, 2005 Cadillac STS should accelerate faster than 1978 Avanti Avanti. With that said, vehicle weight also plays an important factor in acceleration. 2005 Cadillac STS weights approximately 216 kg more than 1978 Avanti Avanti. 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, 1978 Avanti Avanti (442 Nm @ 2000 RPM) has 103 more torque (in Nm) than 2005 Cadillac STS. (339 Nm @ 3200 RPM). This means 1978 Avanti Avanti will have an easier job in driving up hills or pulling heavy equipment than 2005 Cadillac STS.
Compare all specifications:
| 2005 Cadillac STS | 1978 Avanti Avanti | |
| Make | Cadillac | Avanti |
| Model | STS | Avanti |
| Year Released | 2005 | 1978 |
| Engine Size | 3556 cc | 6568 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Horse Power | 255 HP | 177 HP |
| Engine RPM | 6500 RPM | 3400 RPM |
| Torque | 339 Nm | 442 Nm |
| Torque RPM | 3200 RPM | 2000 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Vehicle Weight | 1796 kg | 1580 kg |
| Vehicle Length | 4990 mm | 4910 mm |
| Vehicle Width | 1850 mm | 1800 mm |
| Vehicle Height | 1470 mm | 1380 mm |
| Wheelbase Size | 2890 mm | 2780 mm |
