2006 Audi RS4 vs. 1978 Mazda Cosmo
To start off, 2006 Audi RS4 is newer by 28 year(s). Which means there will be less support and parts availability for 1978 Mazda Cosmo. In addition, the cost of maintenance, including insurance, on 1978 Mazda Cosmo would be higher. At 4,163 cc (8 cylinders), 2006 Audi RS4 is equipped with a bigger engine. In terms of performance, 2006 Audi RS4 (414 HP @ 7800 RPM) has 321 more horse power than 1978 Mazda Cosmo. (93 HP @ 5500 RPM). In normal driving conditions, 2006 Audi RS4 should accelerate faster than 1978 Mazda Cosmo. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi RS4 weights approximately 558 kg more than 1978 Mazda Cosmo. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 1978 Mazda Cosmo. In wet, icy, snow, or gravel driving conditions, 2006 Audi RS4 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, 2006 Audi RS4 (430 Nm @ 5500 RPM) has 280 more torque (in Nm) than 1978 Mazda Cosmo. (150 Nm @ 3300 RPM). This means 2006 Audi RS4 will have an easier job in driving up hills or pulling heavy equipment than 1978 Mazda Cosmo.
Compare all specifications:
| 2006 Audi RS4 | 1978 Mazda Cosmo | |
| Make | Audi | Mazda |
| Model | RS4 | Cosmo |
| Year Released | 2006 | 1978 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1769 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 414 HP | 93 HP |
| Engine RPM | 7800 RPM | 5500 RPM |
| Torque | 430 Nm | 150 Nm |
| Torque RPM | 5500 RPM | 3300 RPM |
| Engine Bore Size | 84.5 mm | 80 mm |
| Engine Stroke Size | 92.8 mm | 88 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1650 kg | 1092 kg |
| Vehicle Length | 4590 mm | 4480 mm |
| Vehicle Width | 1820 mm | 1690 mm |
| Vehicle Height | 1420 mm | 1340 mm |
| Wheelbase Size | 2660 mm | 2520 mm |
| Fuel Tank Capacity | 63 L | 65 L |
