1987 Ford Sierra vs. 2010 Ford Flex
To start off, 2010 Ford Flex is newer by 23 year(s). Which means there will be less support and parts availability for 1987 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1987 Ford Sierra would be higher. At 3,500 cc (6 cylinders), 2010 Ford Flex is equipped with a bigger engine. In terms of performance, 2010 Ford Flex (262 HP @ 6250 RPM) has 149 more horse power than 1987 Ford Sierra. (113 HP @ 5300 RPM) In normal driving conditions, 2010 Ford Flex should accelerate faster than 1987 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2010 Ford Flex weights approximately 938 kg more than 1987 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2010 Ford Flex (336 Nm @ 4500 RPM) has 156 more torque (in Nm) than 1987 Ford Sierra. (180 Nm @ 3000 RPM). This means 2010 Ford Flex will have an easier job in driving up hills or pulling heavy equipment than 1987 Ford Sierra.
Compare all specifications:
| 1987 Ford Sierra | 2010 Ford Flex | |
| Make | Ford | Ford |
| Model | Sierra | Flex |
| Year Released | 1987 | 2010 |
| Engine Position | Front | Front |
| Engine Size | 2294 cc | 3500 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 113 HP | 262 HP |
| Engine RPM | 5300 RPM | 6250 RPM |
| Torque | 180 Nm | 336 Nm |
| Torque RPM | 3000 RPM | 4500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1090 kg | 2028 kg |
| Vehicle Length | 4400 mm | 5126 mm |
| Vehicle Width | 1680 mm | 1928 mm |
| Vehicle Height | 1370 mm | 1727 mm |
| Wheelbase Size | 2620 mm | 2995 mm |
| Fuel Tank Capacity | 45 L | 70 L |
