1978 Cadillac Seville vs. 2005 Porsche 911
To start off, 2005 Porsche 911 is newer by 27 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, 2005 Porsche 911 (315 HP @ 6800 RPM) has 192 more horse power than 1978 Cadillac Seville. (123 HP @ 3600 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 1978 Cadillac Seville. With that said, vehicle weight also plays an important factor in acceleration. 1978 Cadillac Seville weights approximately 325 kg more than 2005 Porsche 911.
Because 2005 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1978 Cadillac Seville. In wet, icy, snow, or gravel driving conditions, 2005 Porsche 911 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, 2005 Porsche 911 (370 Nm @ 4250 RPM) has 66 more torque (in Nm) than 1978 Cadillac Seville. (304 Nm @ 1600 RPM). This means 2005 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1978 Cadillac Seville.
Compare all specifications:
| 1978 Cadillac Seville | 2005 Porsche 911 | |
| Make | Cadillac | Porsche |
| Model | Seville | 911 |
| Year Released | 1978 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 5735 cc | 3596 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 123 HP | 315 HP |
| Engine RPM | 3600 RPM | 6800 RPM |
| Torque | 304 Nm | 370 Nm |
| Torque RPM | 1600 RPM | 4250 RPM |
| Engine Bore Size | 103 mm | 96 mm |
| Engine Stroke Size | 86 mm | 82.8 mm |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1890 kg | 1565 kg |
| Vehicle Length | 5190 mm | 4440 mm |
| Vehicle Width | 1830 mm | 1840 mm |
| Vehicle Height | 1400 mm | 1300 mm |
| Wheelbase Size | 2910 mm | 2360 mm |
| Fuel Tank Capacity | 79 L | 64 L |
