1990 Ford Sierra vs. 2005 BMW 645
To start off, 2005 BMW 645 is newer by 15 year(s). Which means there will be less support and parts availability for 1990 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1990 Ford Sierra would be higher. At 4,392 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (326 HP @ 6100 RPM) has 252 more horse power than 1990 Ford Sierra. (74 HP @ 5300 RPM) In normal driving conditions, 2005 BMW 645 should accelerate faster than 1990 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 885 kg more than 1990 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 BMW 645 (447 Nm @ 3600 RPM) has 325 more torque (in Nm) than 1990 Ford Sierra. (122 Nm @ 2900 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1990 Ford Sierra. 2005 BMW 645 has automatic transmission and 1990 Ford Sierra has manual transmission. 1990 Ford Sierra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1990 Ford Sierra | 2005 BMW 645 | |
| Make | Ford | BMW |
| Model | Sierra | 645 |
| Year Released | 1990 | 2005 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1595 cc | 4392 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 74 HP | 326 HP |
| Engine RPM | 5300 RPM | 6100 RPM |
| Torque | 122 Nm | 447 Nm |
| Torque RPM | 2900 RPM | 3600 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 1010 kg | 1895 kg |
| Vehicle Length | 4500 mm | 4830 mm |
| Vehicle Width | 1680 mm | 1860 mm |
| Vehicle Height | 1400 mm | 1380 mm |
| Wheelbase Size | 2620 mm | 2890 mm |
