1978 Cadillac Seville vs. 1989 Mazda RX-7
To start off, 1989 Mazda RX-7 is newer by 11 year(s). Which means there will be less support and parts availability for 1978 Cadillac Seville. In addition, the cost of maintenance, including insurance, on 1978 Cadillac Seville would be higher. At 5,735 cc (8 cylinders), 1978 Cadillac Seville is equipped with a bigger engine. In terms of performance, 1989 Mazda RX-7 (197 HP @ 6500 RPM) has 74 more horse power than 1978 Cadillac Seville. (123 HP @ 3600 RPM) In normal driving conditions, 1989 Mazda RX-7 should accelerate faster than 1978 Cadillac Seville. With that said, vehicle weight also plays an important factor in acceleration. 1978 Cadillac Seville weights approximately 590 kg more than 1989 Mazda RX-7.
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, 1978 Cadillac Seville (304 Nm @ 1600 RPM) has 33 more torque (in Nm) than 1989 Mazda RX-7. (271 Nm @ 3500 RPM). This means 1978 Cadillac Seville will have an easier job in driving up hills or pulling heavy equipment than 1989 Mazda RX-7. 1978 Cadillac Seville has automatic transmission and 1989 Mazda RX-7 has manual transmission. 1989 Mazda RX-7 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1978 Cadillac Seville will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1978 Cadillac Seville | 1989 Mazda RX-7 | |
| Make | Cadillac | Mazda |
| Model | Seville | RX-7 |
| Year Released | 1978 | 1989 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5735 cc | 2616 cc |
| Engine Type | in-line | dual-disk rotary |
| Horse Power | 123 HP | 197 HP |
| Engine RPM | 3600 RPM | 6500 RPM |
| Torque | 304 Nm | 271 Nm |
| Torque RPM | 1600 RPM | 3500 RPM |
| Fuel Type | Diesel | 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 | 1890 kg | 1300 kg |
| Vehicle Length | 5190 mm | 4320 mm |
| Vehicle Width | 1830 mm | 1700 mm |
| Vehicle Height | 1400 mm | 1270 mm |
| Wheelbase Size | 2910 mm | 2430 mm |
| Fuel Tank Capacity | 79 L | 75 L |
