2007 Cadillac STS vs. 2009 Mazda RX-8
To start off, 2009 Mazda RX-8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2007 Cadillac STS would be higher. At 3,556 cc (6 cylinders), 2007 Cadillac STS is equipped with a bigger engine. In terms of performance, 2007 Cadillac STS (254 HP @ 6500 RPM) has 22 more horse power than 2009 Mazda RX-8. (232 HP @ 8500 RPM). In normal driving conditions, 2007 Cadillac STS should accelerate faster than 2009 Mazda RX-8.
Because 2007 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 2009 Mazda RX-8. 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, 2007 Cadillac STS (342 Nm @ 3200 RPM) has 126 more torque (in Nm) than 2009 Mazda RX-8. (216 Nm @ 5500 RPM). This means 2007 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2009 Mazda RX-8. 2007 Cadillac STS has automatic transmission and 2009 Mazda RX-8 has manual transmission. 2009 Mazda RX-8 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Cadillac STS | 2009 Mazda RX-8 | |
| Make | Cadillac | Mazda |
| Model | STS | RX-8 |
| Year Released | 2007 | 2009 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3556 cc | 1306 cc |
| Engine Type | V | dual-disk rotary |
| Horse Power | 254 HP | 232 HP |
| Engine RPM | 6500 RPM | 8500 RPM |
| Torque | 342 Nm | 216 Nm |
| Torque RPM | 3200 RPM | 5500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4990 mm | 4470 mm |
| Vehicle Width | 1850 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1350 mm |
| Wheelbase Size | 2960 mm | 2710 mm |
| Fuel Consumption City | 13.1 L/100km | 14.7 L/100km |
| Fuel Consumption Overall | 12.4 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 66 L | 64 L |
