2005 Mercury Mountaineer vs. 1981 Pontiac Firebird
To start off, 2005 Mercury Mountaineer is newer by 24 year(s). Which means there will be less support and parts availability for 1981 Pontiac Firebird. In addition, the cost of maintenance, including insurance, on 1981 Pontiac Firebird would be higher. At 5,012 cc (8 cylinders), 1981 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 2005 Mercury Mountaineer (210 HP) has 65 more horse power than 1981 Pontiac Firebird. (145 HP). In normal driving conditions, 2005 Mercury Mountaineer should accelerate faster than 1981 Pontiac Firebird. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercury Mountaineer weights approximately 375 kg more than 1981 Pontiac Firebird. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Mercury Mountaineer (344 Nm) has 20 more torque (in Nm) than 1981 Pontiac Firebird. (324 Nm). This means 2005 Mercury Mountaineer will have an easier job in driving up hills or pulling heavy equipment than 1981 Pontiac Firebird.
Compare all specifications:
| 2005 Mercury Mountaineer | 1981 Pontiac Firebird | |
| Make | Mercury | Pontiac |
| Model | Mountaineer | Firebird |
| Year Released | 2005 | 1981 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4015 cc | 5012 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 210 HP | 145 HP |
| Torque | 344 Nm | 324 Nm |
| Engine Bore Size | 100 mm | 95 mm |
| Engine Stroke Size | 84 mm | 88.4 mm |
| Engine Compression Ratio | 9.7:1 | 8.6:1 |
| Number of Seats | 7 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1917 kg | 1542 kg |
| Vehicle Length | 4860 mm | 5040 mm |
| Vehicle Width | 1840 mm | 1860 mm |
| Vehicle Height | 1850 mm | 1260 mm |
| Wheelbase Size | 2900 mm | 2750 mm |
| Fuel Tank Capacity | 85 L | 79 L |
