1986 Buick Regal vs. 2007 Cadillac STS
To start off, 2007 Cadillac STS is newer by 21 year(s). Which means there will be less support and parts availability for 1986 Buick Regal. In addition, the cost of maintenance, including insurance, on 1986 Buick Regal would be higher. At 4,565 cc (8 cylinders), 2007 Cadillac STS is equipped with a bigger engine. In terms of performance, 2007 Cadillac STS (322 HP @ 6400 RPM) has 87 more horse power than 1986 Buick Regal. (235 HP @ 4400 RPM) In normal driving conditions, 2007 Cadillac STS should accelerate faster than 1986 Buick Regal. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac STS weights approximately 330 kg more than 1986 Buick Regal. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 1986 Buick Regal. In wet, icy, snow, or gravel driving conditions, 2007 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, 1986 Buick Regal (448 Nm @ 2800 RPM) has 21 more torque (in Nm) than 2007 Cadillac STS. (427 Nm @ 4400 RPM). This means 1986 Buick Regal will have an easier job in driving up hills or pulling heavy equipment than 2007 Cadillac STS.
Compare all specifications:
| 1986 Buick Regal | 2007 Cadillac STS | |
| Make | Buick | Cadillac |
| Model | Regal | STS |
| Year Released | 1986 | 2007 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 4565 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 235 HP | 322 HP |
| Engine RPM | 4400 RPM | 6400 RPM |
| Torque | 448 Nm | 427 Nm |
| Torque RPM | 2800 RPM | 4400 RPM |
| Engine Bore Size | 96.5 mm | 93 mm |
| Engine Stroke Size | 86.4 mm | 84 mm |
| Engine Compression Ratio | 8.0:1 | 10.5:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1490 kg | 1820 kg |
| Vehicle Length | 5100 mm | 4990 mm |
| Vehicle Width | 1830 mm | 1850 mm |
| Vehicle Height | 1390 mm | 1470 mm |
| Wheelbase Size | 2750 mm | 2960 mm |
| Fuel Tank Capacity | 68 L | 66 L |
