1999 Buick Riviera vs. 2009 Cadillac STS
To start off, 2009 Cadillac STS is newer by 10 year(s). Which means there will be less support and parts availability for 1999 Buick Riviera. In addition, the cost of maintenance, including insurance, on 1999 Buick Riviera would be higher. At 3,791 cc (6 cylinders), 1999 Buick Riviera is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (302 HP @ 6300 RPM) has 97 more horse power than 1999 Buick Riviera. (205 HP @ 5200 RPM) In normal driving conditions, 2009 Cadillac STS should accelerate faster than 1999 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 1999 Buick Riviera weights approximately 65 kg more than 2009 Cadillac STS.
Because 2009 Cadillac STS is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2009 Cadillac STS. However, in wet, icy, snow, or gravel driving conditions, 1999 Buick Riviera, being front wheel drive (FWD), will offer much better control with better grip. 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 (369 Nm @ 5200 RPM) has 57 more torque (in Nm) than 1999 Buick Riviera. (312 Nm @ 4000 RPM). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1999 Buick Riviera.
Compare all specifications:
| 1999 Buick Riviera | 2009 Cadillac STS | |
| Make | Buick | Cadillac |
| Model | Riviera | STS |
| Year Released | 1999 | 2009 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 3599 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 205 HP | 302 HP |
| Engine RPM | 5200 RPM | 6300 RPM |
| Torque | 312 Nm | 369 Nm |
| Torque RPM | 4000 RPM | 5200 RPM |
| Engine Compression Ratio | 9.4:1 | 11.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1700 kg | 1635 kg |
| Vehicle Length | 5270 mm | 5000 mm |
| Vehicle Width | 1910 mm | 1850 mm |
| Vehicle Height | 1400 mm | 1470 mm |
