2009 Cadillac DTS vs. 1991 Mazda RX-7
To start off, 2009 Cadillac DTS is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Mazda RX-7. In addition, the cost of maintenance, including insurance, on 1991 Mazda RX-7 would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac DTS is equipped with a bigger engine. In terms of performance, 2009 Cadillac DTS (292 HP @ 6300 RPM) has 95 more horse power than 1991 Mazda RX-7. (197 HP @ 6500 RPM). In normal driving conditions, 2009 Cadillac DTS should accelerate faster than 1991 Mazda RX-7. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac DTS weights approximately 335 kg more than 1991 Mazda RX-7. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1991 Mazda RX-7 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 1991 Mazda RX-7. However, in wet, icy, snow, or gravel driving conditions, 2009 Cadillac DTS, 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 DTS (391 Nm @ 4500 RPM) has 120 more torque (in Nm) than 1991 Mazda RX-7. (271 Nm @ 3500 RPM). This means 2009 Cadillac DTS will have an easier job in driving up hills or pulling heavy equipment than 1991 Mazda RX-7. 2009 Cadillac DTS has automatic transmission and 1991 Mazda RX-7 has manual transmission. 1991 Mazda RX-7 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Cadillac DTS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Cadillac DTS | 1991 Mazda RX-7 | |
| Make | Cadillac | Mazda |
| Model | DTS | RX-7 |
| Year Released | 2009 | 1991 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 2616 cc |
| Engine Type | V | dual-disk rotary |
| Horse Power | 292 HP | 197 HP |
| Engine RPM | 6300 RPM | 6500 RPM |
| Torque | 391 Nm | 271 Nm |
| Torque RPM | 4500 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 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 | 5280 mm | 4320 mm |
| Vehicle Width | 1910 mm | 1700 mm |
| Vehicle Height | 1470 mm | 1270 mm |
| Wheelbase Size | 2940 mm | 2440 mm |
| Fuel Tank Capacity | 68 L | 75 L |
