2006 Audi S4 vs. 2011 Ford Shelby GT 500
To start off, 2011 Ford Shelby GT 500 is newer by 5 year(s). Which means there will be less support and parts availability for 2006 Audi S4. In addition, the cost of maintenance, including insurance, on 2006 Audi S4 would be higher. At 5,400 cc (8 cylinders), 2011 Ford Shelby GT 500 is equipped with a bigger engine. In terms of performance, 2011 Ford Shelby GT 500 (550 HP @ 6200 RPM) has 211 more horse power than 2006 Audi S4. (339 HP @ 7000 RPM) In normal driving conditions, 2011 Ford Shelby GT 500 should accelerate faster than 2006 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2011 Ford Shelby GT 500 weights approximately 525 kg more than 2006 Audi S4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2011 Ford Shelby GT 500. In wet, icy, snow, or gravel driving conditions, 2006 Audi S4 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, 2011 Ford Shelby GT 500 (691 Nm @ 4250 RPM) has 280 more torque (in Nm) than 2006 Audi S4. (411 Nm @ 3500 RPM). This means 2011 Ford Shelby GT 500 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi S4.
Compare all specifications:
| 2006 Audi S4 | 2011 Ford Shelby GT 500 | |
| Make | Audi | Ford |
| Model | S4 | Shelby GT 500 |
| Year Released | 2006 | 2011 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 5400 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 339 HP | 550 HP |
| Engine RPM | 7000 RPM | 6200 RPM |
| Torque | 411 Nm | 691 Nm |
| Torque RPM | 3500 RPM | 4250 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1275 kg | 1800 kg |
| Vehicle Length | 4580 mm | 4780 mm |
| Vehicle Width | 1790 mm | 1877 mm |
| Vehicle Height | 1450 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2720 mm |
| Fuel Consumption Highway | 11.2 L/100km | 10.2 L/100km |
| Fuel Consumption City | 15.7 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 63 L | 61 L |
