2009 Cadillac STS vs. 1991 Chrysler Viper
To start off, 2009 Cadillac STS is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Chrysler Viper. In addition, the cost of maintenance, including insurance, on 1991 Chrysler Viper would be higher. At 7,986 cc (10 cylinders), 1991 Chrysler Viper is equipped with a bigger engine. In terms of performance, 1991 Chrysler Viper (389 HP @ 5150 RPM) has 87 more horse power than 2009 Cadillac STS. (302 HP @ 6300 RPM) In normal driving conditions, 1991 Chrysler Viper should accelerate faster than 2009 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 45 kg more than 1991 Chrysler Viper.
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, 1991 Chrysler Viper (621 Nm @ 3600 RPM) has 252 more torque (in Nm) than 2009 Cadillac STS. (369 Nm @ 5200 RPM). This means 1991 Chrysler Viper will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS. 2009 Cadillac STS has automatic transmission and 1991 Chrysler Viper has manual transmission. 1991 Chrysler Viper will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Cadillac STS | 1991 Chrysler Viper | |
| Make | Cadillac | Chrysler |
| Model | STS | Viper |
| Year Released | 2009 | 1991 |
| Body Type | Sedan | Roadster |
| Engine Position | Front | Front |
| Engine Size | 3599 cc | 7986 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 302 HP | 389 HP |
| Engine RPM | 6300 RPM | 5150 RPM |
| Torque | 369 Nm | 621 Nm |
| Torque RPM | 5200 RPM | 3600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1635 kg | 1590 kg |
| Vehicle Length | 5000 mm | 4460 mm |
| Vehicle Width | 1850 mm | 1930 mm |
| Vehicle Height | 1470 mm | 1130 mm |
| Wheelbase Size | 2960 mm | 2450 mm |
