2005 Audi TT vs. 2003 BMW 645
To start off, 2005 Audi TT is newer by 2 year(s). Which means there will be less support and parts availability for 2003 BMW 645. In addition, the cost of maintenance, including insurance, on 2003 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (310 HP @ 6000 RPM) has 93 more horse power than 2005 Audi TT. (217 HP @ 5900 RPM) In normal driving conditions, 2003 BMW 645 should accelerate faster than 2005 Audi TT. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 303 kg more than 2005 Audi TT. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi TT is four wheel drive (4WD), it will have significant more traction and grip than 2003 BMW 645. In wet, icy, snow, or gravel driving conditions, 2005 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, 2003 BMW 645 (450 Nm @ 3600 RPM) has 170 more torque (in Nm) than 2005 Audi TT. (280 Nm @ 2200 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi TT. 2003 BMW 645 has automatic transmission and 2005 Audi TT has manual transmission. 2005 Audi TT will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Audi TT | 2003 BMW 645 | |
| Make | Audi | BMW |
| Model | TT | 645 |
| Year Released | 2005 | 2003 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 4398 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 217 HP | 310 HP |
| Engine RPM | 5900 RPM | 6000 RPM |
| Torque | 280 Nm | 450 Nm |
| Torque RPM | 2200 RPM | 3600 RPM |
| Engine Bore Size | 81.1 mm | 92 mm |
| Engine Stroke Size | 86.4 mm | 82.7 mm |
| Engine Compression Ratio | 9.0:1 | 10.5:1 |
| Acceleration 0-100mph | 6.4 seconds | 5.9 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1395 kg | 1698 kg |
| Vehicle Length | 4050 mm | 4830 mm |
| Vehicle Width | 1770 mm | 1860 mm |
| Vehicle Height | 1350 mm | 1380 mm |
| Wheelbase Size | 2440 mm | 2790 mm |
| Fuel Consumption Overall | 9.2 L/100km | 10.9 L/100km |
| Fuel Tank Capacity | 62 L | 70 L |
