2005 Kia Sorento vs. 1981 Pontiac Firebird
To start off, 2005 Kia Sorento 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 3,790 cc (6 cylinders), 1981 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 2005 Kia Sorento (192 HP @ 4150 RPM) has 82 more horse power than 1981 Pontiac Firebird. (110 HP @ 3800 RPM). In normal driving conditions, 2005 Kia Sorento should accelerate faster than 1981 Pontiac Firebird. With that said, vehicle weight also plays an important factor in acceleration. 2005 Kia Sorento weights approximately 260 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 Kia Sorento (294 Nm) has 38 more torque (in Nm) than 1981 Pontiac Firebird. (256 Nm). This means 2005 Kia Sorento will have an easier job in driving up hills or pulling heavy equipment than 1981 Pontiac Firebird.
Compare all specifications:
| 2005 Kia Sorento | 1981 Pontiac Firebird | |
| Make | Kia | Pontiac |
| Model | Sorento | Firebird |
| Year Released | 2005 | 1981 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3489 cc | 3790 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 192 HP | 110 HP |
| Engine RPM | 4150 RPM | 3800 RPM |
| Torque | 294 Nm | 256 Nm |
| Engine Bore Size | 93 mm | 96.5 mm |
| Engine Stroke Size | 86 mm | 86.4 mm |
| Engine Compression Ratio | 10.0:1 | 8.0:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1865 kg | 1605 kg |
| Vehicle Length | 4570 mm | 5040 mm |
| Vehicle Width | 1870 mm | 1860 mm |
| Vehicle Height | 1740 mm | 1260 mm |
| Wheelbase Size | 2710 mm | 2750 mm |
| Fuel Tank Capacity | 80 L | 79 L |
