2005 Audi A8 vs. 2003 Audi TT
To start off, 2005 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Audi TT. In addition, the cost of maintenance, including insurance, on 2003 Audi TT would be higher. At 2,966 cc (6 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (230 HP @ 4000 RPM) has 69 more horse power than 2003 Audi TT. (161 HP @ 5800 RPM). In normal driving conditions, 2005 Audi A8 should accelerate faster than 2003 Audi TT. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 520 kg more than 2003 Audi TT. 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 2003 Audi TT. 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 (450 Nm @ 1400 RPM) has 215 more torque (in Nm) than 2003 Audi TT. (235 Nm @ 1950 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi TT.
Compare all specifications:
| 2005 Audi A8 | 2003 Audi TT | |
| Make | Audi | Audi |
| Model | A8 | TT |
| Year Released | 2005 | 2003 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2966 cc | 1781 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 230 HP | 161 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 450 Nm | 235 Nm |
| Torque RPM | 1400 RPM | 1950 RPM |
| Engine Bore Size | 83 mm | 81.1 mm |
| Engine Stroke Size | 91.4 mm | 86.4 mm |
| Engine Compression Ratio | 17.0:1 | 10.3:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1830 kg | 1310 kg |
| Vehicle Length | 5060 mm | 4010 mm |
| Vehicle Width | 1900 mm | 1760 mm |
| Vehicle Height | 1450 mm | 1350 mm |
| Wheelbase Size | 2950 mm | 2430 mm |
| Fuel Tank Capacity | 90 L | 55 L |
