2005 Audi RS6 vs. 1978 Cadillac Seville
To start off, 2005 Audi RS6 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 Audi RS6 (444 HP @ 5700 RPM) has 321 more horse power than 1978 Cadillac Seville. (123 HP @ 3600 RPM). In normal driving conditions, 2005 Audi RS6 should accelerate faster than 1978 Cadillac Seville. With that said, vehicle weight also plays an important factor in acceleration. 1978 Cadillac Seville weights approximately 25 kg more than 2005 Audi RS6.
Because 2005 Audi RS6 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 Audi RS6 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 Audi RS6 (580 Nm @ 1950 RPM) has 276 more torque (in Nm) than 1978 Cadillac Seville. (304 Nm @ 1600 RPM). This means 2005 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 1978 Cadillac Seville.
Compare all specifications:
| 2005 Audi RS6 | 1978 Cadillac Seville | |
| Make | Audi | Cadillac |
| Model | RS6 | Seville |
| Year Released | 2005 | 1978 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 5735 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Horse Power | 444 HP | 123 HP |
| Engine RPM | 5700 RPM | 3600 RPM |
| Torque | 580 Nm | 304 Nm |
| Torque RPM | 1950 RPM | 1600 RPM |
| Engine Bore Size | 84.5 mm | 103 mm |
| Engine Stroke Size | 93 mm | 86 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1865 kg | 1890 kg |
| Vehicle Length | 4840 mm | 5190 mm |
| Vehicle Width | 1860 mm | 1830 mm |
| Vehicle Height | 1400 mm | 1400 mm |
| Wheelbase Size | 2760 mm | 2910 mm |
| Fuel Tank Capacity | 82 L | 79 L |
