2009 Cadillac STS vs. 1990 Mazda RX-7
To start off, 2009 Cadillac STS is newer by 19 year(s). Which means there will be less support and parts availability for 1990 Mazda RX-7. In addition, the cost of maintenance, including insurance, on 1990 Mazda RX-7 would be higher. At 3,599 cc (6 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (302 HP @ 6300 RPM) has 105 more horse power than 1990 Mazda RX-7. (197 HP @ 6500 RPM). In normal driving conditions, 2009 Cadillac STS should accelerate faster than 1990 Mazda RX-7. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 335 kg more than 1990 Mazda RX-7. 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, 2009 Cadillac STS (369 Nm @ 5200 RPM) has 99 more torque (in Nm) than 1990 Mazda RX-7. (270 Nm @ 3500 RPM). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 1990 Mazda RX-7. 2009 Cadillac STS has automatic transmission and 1990 Mazda RX-7 has manual transmission. 1990 Mazda RX-7 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 | 1990 Mazda RX-7 | |
| Make | Cadillac | Mazda |
| Model | STS | RX-7 |
| Year Released | 2009 | 1990 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3599 cc | 2616 cc |
| Engine Type | V | dual-disk rotary |
| Horse Power | 302 HP | 197 HP |
| Engine RPM | 6300 RPM | 6500 RPM |
| Torque | 369 Nm | 270 Nm |
| Torque RPM | 5200 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1635 kg | 1300 kg |
| Vehicle Length | 5000 mm | 4320 mm |
| Vehicle Width | 1850 mm | 1700 mm |
| Vehicle Height | 1470 mm | 1270 mm |
| Wheelbase Size | 2960 mm | 2430 mm |
| Fuel Tank Capacity | 64 L | 75 L |
