1978 Cadillac Seville vs. 1989 Pontiac Grand Am
To start off, 1989 Pontiac Grand Am 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 Pontiac Grand Am (163 HP @ 5600 RPM) has 40 more horse power than 1978 Cadillac Seville. (123 HP @ 3600 RPM) In normal driving conditions, 1989 Pontiac Grand Am should accelerate faster than 1978 Cadillac Seville. With that said, vehicle weight also plays an important factor in acceleration. 1978 Cadillac Seville weights approximately 655 kg more than 1989 Pontiac Grand Am.
Because 1978 Cadillac Seville 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 1978 Cadillac Seville. However, in wet, icy, snow, or gravel driving conditions, 1989 Pontiac Grand Am, 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, 1978 Cadillac Seville (304 Nm @ 1600 RPM) has 67 more torque (in Nm) than 1989 Pontiac Grand Am. (237 Nm @ 4000 RPM). This means 1978 Cadillac Seville will have an easier job in driving up hills or pulling heavy equipment than 1989 Pontiac Grand Am. 1978 Cadillac Seville has automatic transmission and 1989 Pontiac Grand Am has manual transmission. 1989 Pontiac Grand Am 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 Pontiac Grand Am | |
| Make | Cadillac | Pontiac |
| Model | Seville | Grand Am |
| Year Released | 1978 | 1989 |
| Engine Position | Front | Front |
| Engine Size | 5735 cc | 1996 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 123 HP | 163 HP |
| Engine RPM | 3600 RPM | 5600 RPM |
| Torque | 304 Nm | 237 Nm |
| Torque RPM | 1600 RPM | 4000 RPM |
| Engine Bore Size | 103 mm | 86 mm |
| Engine Stroke Size | 86 mm | 86 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1890 kg | 1235 kg |
| Vehicle Length | 5190 mm | 4520 mm |
| Vehicle Width | 1830 mm | 1710 mm |
| Vehicle Height | 1400 mm | 1340 mm |
| Wheelbase Size | 2910 mm | 2630 mm |
| Fuel Tank Capacity | 79 L | 69 L |
