1987 Ford Sierra vs. 2006 Infiniti Q45
To start off, 2006 Infiniti Q45 is newer by 19 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 4,490 cc (8 cylinders), 2006 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2006 Infiniti Q45 (340 HP @ 6400 RPM) has 227 more horse power than 1987 Ford Sierra. (113 HP @ 5300 RPM) In normal driving conditions, 2006 Infiniti Q45 should accelerate faster than 1987 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2006 Infiniti Q45 weights approximately 230 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, 2006 Infiniti Q45 (452 Nm @ 4000 RPM) has 272 more torque (in Nm) than 1987 Ford Sierra. (180 Nm @ 3000 RPM). This means 2006 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 1987 Ford Sierra.
Compare all specifications:
| 1987 Ford Sierra | 2006 Infiniti Q45 | |
| Make | Ford | Infiniti |
| Model | Sierra | Q45 |
| Year Released | 1987 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 2294 cc | 4490 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 113 HP | 340 HP |
| Engine RPM | 5300 RPM | 6400 RPM |
| Torque | 180 Nm | 452 Nm |
| Torque RPM | 3000 RPM | 4000 RPM |
| Engine Bore Size | 96 mm | 93 mm |
| Engine Stroke Size | 79.5 mm | 82.7 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1090 kg | 1320 kg |
| Vehicle Length | 4400 mm | 5110 mm |
| Vehicle Width | 1680 mm | 1850 mm |
| Vehicle Height | 1370 mm | 1500 mm |
| Wheelbase Size | 2620 mm | 2880 mm |
| Fuel Tank Capacity | 45 L | 81 L |
