2005 Audi A8 vs. 1991 Ford Mustang
To start off, 2005 Audi A8 is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Ford Mustang. In addition, the cost of maintenance, including insurance, on 1991 Ford Mustang would be higher. At 4,134 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (322 HP @ 3750 RPM) has 216 more horse power than 1991 Ford Mustang. (106 HP @ 4600 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 1991 Ford Mustang. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 685 kg more than 1991 Ford Mustang. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Ford Mustang. In wet, icy, snow, or gravel driving conditions, 2005 Audi A8 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, 2005 Audi A8 (650 Nm @ 1600 RPM) has 467 more torque (in Nm) than 1991 Ford Mustang. (183 Nm @ 2600 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Mustang.
Compare all specifications:
| 2005 Audi A8 | 1991 Ford Mustang | |
| Make | Audi | Ford |
| Model | A8 | Mustang |
| Year Released | 2005 | 1991 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4134 cc | 2301 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 322 HP | 106 HP |
| Engine RPM | 3750 RPM | 4600 RPM |
| Torque | 650 Nm | 183 Nm |
| Torque RPM | 1600 RPM | 2600 RPM |
| Engine Bore Size | 83 mm | 96 mm |
| Engine Stroke Size | 95.5 mm | 79.5 mm |
| Engine Compression Ratio | 16.5:1 | 9.5:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1945 kg | 1260 kg |
| Vehicle Length | 5070 mm | 4560 mm |
| Vehicle Width | 1900 mm | 1760 mm |
| Vehicle Height | 1450 mm | 1330 mm |
| Wheelbase Size | 2950 mm | 2560 mm |
| Fuel Tank Capacity | 90 L | 45 L |
