2006 Audi TT vs. 1991 Ford Sierra
To start off, 2006 Audi TT is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1991 Ford Sierra would be higher. At 1,781 cc (4 cylinders), 2006 Audi TT is equipped with a bigger engine. In terms of performance, 2006 Audi TT (221 HP @ 5900 RPM) has 146 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM). In normal driving conditions, 2006 Audi TT should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi TT weights approximately 135 kg more than 1991 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, 2006 Audi TT (280 Nm @ 2200 RPM) has 128 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2006 Audi TT will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 2006 Audi TT | 1991 Ford Sierra | |
| Make | Audi | Ford |
| Model | TT | Sierra |
| Year Released | 2006 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 1751 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 221 HP | 75 HP |
| Engine RPM | 5900 RPM | 4500 RPM |
| Torque | 280 Nm | 152 Nm |
| Torque RPM | 2200 RPM | 2200 RPM |
| Engine Bore Size | 81.1 mm | 82.5 mm |
| Engine Stroke Size | 86.4 mm | 82 mm |
| Engine Compression Ratio | 9.0:1 | 21.5:1 |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1280 kg | 1145 kg |
| Vehicle Length | 4050 mm | 4430 mm |
| Vehicle Width | 1770 mm | 1700 mm |
| Vehicle Height | 1350 mm | 1370 mm |
| Wheelbase Size | 2440 mm | 2620 mm |
| Fuel Tank Capacity | 62 L | 60 L |
