1998 Audi A6 vs. 1987 Ford Sierra
To start off, 1998 Audi A6 is newer by 11 year(s). Which means there will be less support and parts availability for 1987 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1987 Ford Sierra would be higher. At 2,294 cc (4 cylinders), 1987 Ford Sierra is equipped with a bigger engine. In terms of performance, 1998 Audi A6 (148 HP @ 5700 RPM) has 35 more horse power than 1987 Ford Sierra. (113 HP @ 5300 RPM). In normal driving conditions, 1998 Audi A6 should accelerate faster than 1987 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1998 Audi A6 weights approximately 290 kg more than 1987 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1998 Audi A6 (210 Nm @ 1750 RPM) has 30 more torque (in Nm) than 1987 Ford Sierra. (180 Nm @ 3000 RPM). This means 1998 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 1987 Ford Sierra.
Compare all specifications:
| 1998 Audi A6 | 1987 Ford Sierra | |
| Make | Audi | Ford |
| Model | A6 | Sierra |
| Year Released | 1998 | 1987 |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 2294 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 113 HP |
| Engine RPM | 5700 RPM | 5300 RPM |
| Torque | 210 Nm | 180 Nm |
| Torque RPM | 1750 RPM | 3000 RPM |
| Engine Bore Size | 81 mm | 96 mm |
| Engine Stroke Size | 86.4 mm | 79.5 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1380 kg | 1090 kg |
| Vehicle Length | 4800 mm | 4400 mm |
| Vehicle Width | 1820 mm | 1680 mm |
| Vehicle Height | 1460 mm | 1370 mm |
| Wheelbase Size | 2850 mm | 2620 mm |
| Fuel Tank Capacity | 70 L | 45 L |
