1991 Buick Riviera vs. 2009 Cadillac STS-V
To start off, 2009 Cadillac STS-V is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Buick Riviera. In addition, the cost of maintenance, including insurance, on 1991 Buick Riviera would be higher. At 4,376 cc (8 cylinders), 2009 Cadillac STS-V is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS-V (469 HP @ 6400 RPM) has 299 more horse power than 1991 Buick Riviera. (170 HP @ 4800 RPM) In normal driving conditions, 2009 Cadillac STS-V should accelerate faster than 1991 Buick Riviera.
Because 2009 Cadillac STS-V 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-V. However, in wet, icy, snow, or gravel driving conditions, 1991 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-V (595 Nm @ 3900 RPM) has 310 more torque (in Nm) than 1991 Buick Riviera. (285 Nm @ 3200 RPM). This means 2009 Cadillac STS-V will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Riviera.
Compare all specifications:
| 1991 Buick Riviera | 2009 Cadillac STS-V | |
| Make | Buick | Cadillac |
| Model | Riviera | STS-V |
| Year Released | 1991 | 2009 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3800 cc | 4376 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 170 HP | 469 HP |
| Engine RPM | 4800 RPM | 6400 RPM |
| Torque | 285 Nm | 595 Nm |
| Torque RPM | 3200 RPM | 3900 RPM |
| 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 Length | 5040 mm | 5030 mm |
| Vehicle Width | 1830 mm | 1850 mm |
| Vehicle Height | 1350 mm | 1480 mm |
| Wheelbase Size | 2760 mm | 2960 mm |
