2009 Audi Q7 vs. 1987 Ford Sierra
To start off, 2009 Audi Q7 is newer by 22 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 4,132 cc (8 cylinders), 2009 Audi Q7 is equipped with a bigger engine. In terms of performance, 2009 Audi Q7 (322 HP @ 3750 RPM) has 209 more horse power than 1987 Ford Sierra. (113 HP @ 5300 RPM). In normal driving conditions, 2009 Audi Q7 should accelerate faster than 1987 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi Q7 weights approximately 1330 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, 2009 Audi Q7 (760 Nm @ 1800 RPM) has 580 more torque (in Nm) than 1987 Ford Sierra. (180 Nm @ 3000 RPM). This means 2009 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 1987 Ford Sierra.
Compare all specifications:
| 2009 Audi Q7 | 1987 Ford Sierra | |
| Make | Audi | Ford |
| Model | Q7 | Sierra |
| Year Released | 2009 | 1987 |
| Engine Position | Front | Front |
| Engine Size | 4132 cc | 2294 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 322 HP | 113 HP |
| Engine RPM | 3750 RPM | 5300 RPM |
| Torque | 760 Nm | 180 Nm |
| Torque RPM | 1800 RPM | 3000 RPM |
| Engine Bore Size | 83 mm | 96 mm |
| Engine Stroke Size | 95.5 mm | 79.5 mm |
| Fuel Type | Diesel | Gasoline |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 2420 kg | 1090 kg |
| Vehicle Length | 5090 mm | 4400 mm |
| Vehicle Width | 1990 mm | 1680 mm |
| Vehicle Height | 1780 mm | 1370 mm |
| Wheelbase Size | 3010 mm | 2620 mm |
| Fuel Tank Capacity | 100 L | 45 L |
