2003 Audi TT vs. 2006 BMW 645
To start off, 2006 BMW 645 is newer by 3 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 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 91 more horse power than 2003 Audi TT. (237 HP @ 6500 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 2003 Audi TT. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 172 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 2003 Audi TT is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW 645. In wet, icy, snow, or gravel driving conditions, 2003 Audi TT 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 111 more torque (in Nm) than 2003 Audi TT. (339 Nm @ 2800 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi TT.
Compare all specifications:
| 2003 Audi TT | 2006 BMW 645 | |
| Make | Audi | BMW |
| Model | TT | 645 |
| Year Released | 2003 | 2006 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2983 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 328 HP |
| Engine RPM | 6500 RPM | 6100 RPM |
| Torque | 339 Nm | 450 Nm |
| Torque RPM | 2800 RPM | 3600 RPM |
| Engine Compression Ratio | 11.3:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1520 kg | 1692 kg |
| Vehicle Length | 4010 mm | 4830 mm |
| Vehicle Width | 1760 mm | 1860 mm |
| Vehicle Height | 1350 mm | 1380 mm |
| Wheelbase Size | 2430 mm | 2790 mm |
| Fuel Tank Capacity | 62 L | 70 L |
