2008 Audi S8 vs. 2013 Cadillac XTS
To start off, 2013 Cadillac XTS is newer by 5 year(s). Which means there will be less support and parts availability for 2008 Audi S8. In addition, the cost of maintenance, including insurance, on 2008 Audi S8 would be higher. At 5,204 cc (10 cylinders), 2008 Audi S8 is equipped with a bigger engine. In terms of performance, 2008 Audi S8 (450 HP @ 7000 RPM) has 136 more horse power than 2013 Cadillac XTS. (314 HP @ 6800 RPM). In normal driving conditions, 2008 Audi S8 should accelerate faster than 2013 Cadillac XTS. With that said, vehicle weight also plays an important factor in acceleration. 2013 Cadillac XTS weights approximately 752 kg more than 2008 Audi S8.
Both vehicles are all wheel drive (AWD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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, 2008 Audi S8 (540 Nm @ 3500 RPM) has 182 more torque (in Nm) than 2013 Cadillac XTS. (358 Nm @ 5200 RPM). This means 2008 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2013 Cadillac XTS.
Compare all specifications:
| 2008 Audi S8 | 2013 Cadillac XTS | |
| Make | Audi | Cadillac |
| Model | S8 | XTS |
| Year Released | 2008 | 2013 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 3564 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 314 HP |
| Engine RPM | 7000 RPM | 6800 RPM |
| Torque | 540 Nm | 358 Nm |
| Torque RPM | 3500 RPM | 5200 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | AWD | AWD |
| Transmission Type | Automatic | 6-speed automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1160 kg | 1912 kg |
| Vehicle Length | 5070 mm | 5131 mm |
| Vehicle Width | 1900 mm | 1852 mm |
| Vehicle Height | 1430 mm | 1510 mm |
| Wheelbase Size | 2950 mm | 2831 mm |
| Fuel Consumption Highway | 12.4 L/100km | 9 L/100km |
| Fuel Consumption Overall | 15.7 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 90 L | 76 L |
