1991 Acura Legend vs. 2007 BMW 645
To start off, 2007 BMW 645 is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Acura Legend. In addition, the cost of maintenance, including insurance, on 1991 Acura Legend would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. In terms of performance, 2007 BMW 645 (328 HP) has 168 more horse power than 1991 Acura Legend. (160 HP) In normal driving conditions, 2007 BMW 645 should accelerate faster than 1991 Acura Legend. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 645 weights approximately 265 kg more than 1991 Acura Legend. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW 645 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2007 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 1991 Acura Legend, being front wheel drive (FWD), will offer much better control with better grip. 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, 2007 BMW 645 (450 Nm) has 230 more torque (in Nm) than 1991 Acura Legend. (220 Nm). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1991 Acura Legend. 2007 BMW 645 has automatic transmission and 1991 Acura Legend has manual transmission. 1991 Acura Legend will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Acura Legend | 2007 BMW 645 | |
| Make | Acura | BMW |
| Model | Legend | 645 |
| Year Released | 1991 | 2007 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2673 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 160 HP | 328 HP |
| Torque | 220 Nm | 450 Nm |
| Engine Bore Size | 86.9 mm | 92 mm |
| Engine Stroke Size | 74.9 mm | 82.7 mm |
| Engine Compression Ratio | 9.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1550 kg | 1815 kg |
| Vehicle Length | 4780 mm | 4830 mm |
| Vehicle Width | 1760 mm | 1860 mm |
| Vehicle Height | 1380 mm | 1380 mm |
| Wheelbase Size | 2710 mm | 2790 mm |
