1973 Triumph Spitfire vs. 2006 BMW 645
To start off, 2006 BMW 645 is newer by 33 year(s). Which means there will be less support and parts availability for 1973 Triumph Spitfire. In addition, the cost of maintenance, including insurance, on 1973 Triumph Spitfire 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 266 more horse power than 1973 Triumph Spitfire. (62 HP @ 6000 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 1973 Triumph Spitfire. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 912 kg more than 1973 Triumph Spitfire. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2006 BMW 645 (450 Nm @ 3600 RPM) has 357 more torque (in Nm) than 1973 Triumph Spitfire. (93 Nm @ 3500 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1973 Triumph Spitfire.
Compare all specifications:
| 1973 Triumph Spitfire | 2006 BMW 645 | |
| Make | Triumph | BMW |
| Model | Spitfire | 645 |
| Year Released | 1973 | 2006 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1296 cc | 4398 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 62 HP | 328 HP |
| Engine RPM | 6000 RPM | 6100 RPM |
| Torque | 93 Nm | 450 Nm |
| Torque RPM | 3500 RPM | 3600 RPM |
| Engine Bore Size | 73.8 mm | 92 mm |
| Engine Stroke Size | 76 mm | 82.7 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 780 kg | 1692 kg |
| Vehicle Length | 3790 mm | 4830 mm |
| Vehicle Width | 1480 mm | 1860 mm |
| Vehicle Height | 1210 mm | 1380 mm |
| Wheelbase Size | 2110 mm | 2790 mm |
