1991 Audi 100 vs. 1978 Audi 100
To start off, 1991 Audi 100 is newer by 13 year(s). Which means there will be less support and parts availability for 1978 Audi 100. In addition, the cost of maintenance, including insurance, on 1978 Audi 100 would be higher. At 2,771 cc (6 cylinders), 1991 Audi 100 is equipped with a bigger engine. In terms of performance, 1991 Audi 100 (171 HP @ 5500 RPM) has 86 more horse power than 1978 Audi 100. (85 HP @ 5600 RPM). In normal driving conditions, 1991 Audi 100 should accelerate faster than 1978 Audi 100. With that said, vehicle weight also plays an important factor in acceleration. 1991 Audi 100 weights approximately 390 kg more than 1978 Audi 100. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1991 Audi 100 is four wheel drive (4WD), it will have significant more traction and grip than 1978 Audi 100. In wet, icy, snow, or gravel driving conditions, 1991 Audi 100 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, 1991 Audi 100 (251 Nm @ 3000 RPM) has 127 more torque (in Nm) than 1978 Audi 100. (124 Nm @ 3200 RPM). This means 1991 Audi 100 will have an easier job in driving up hills or pulling heavy equipment than 1978 Audi 100.
Compare all specifications:
| 1991 Audi 100 | 1978 Audi 100 | |
| Make | Audi | Audi |
| Model | 100 | 100 |
| Year Released | 1991 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 2771 cc | 1588 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 171 HP | 85 HP |
| Engine RPM | 5500 RPM | 5600 RPM |
| Torque | 251 Nm | 124 Nm |
| Torque RPM | 3000 RPM | 3200 RPM |
| Engine Bore Size | 82.5 mm | 79.5 mm |
| Engine Stroke Size | 86.4 mm | 80 mm |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1500 kg | 1110 kg |
| Vehicle Length | 4800 mm | 4600 mm |
| Vehicle Width | 1780 mm | 1770 mm |
| Vehicle Height | 1450 mm | 1400 mm |
| Wheelbase Size | 2690 mm | 2680 mm |
| Fuel Tank Capacity | 80 L | 60 L |
