1983 Bentley Mulsanne vs. 1981 Pontiac Firebird
To start off, 1983 Bentley Mulsanne is newer by 2 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 6,750 cc (8 cylinders), 1983 Bentley Mulsanne is equipped with a bigger engine. In terms of performance, 1983 Bentley Mulsanne (320 HP @ 4200 RPM) has 175 more horse power than 1981 Pontiac Firebird. (145 HP @ 3800 RPM). In normal driving conditions, 1983 Bentley Mulsanne should accelerate faster than 1981 Pontiac Firebird. With that said, vehicle weight also plays an important factor in acceleration. 1983 Bentley Mulsanne weights approximately 868 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.
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, 1983 Bentley Mulsanne (617 Nm @ 2400 RPM) has 293 more torque (in Nm) than 1981 Pontiac Firebird. (324 Nm @ 2400 RPM). This means 1983 Bentley Mulsanne will have an easier job in driving up hills or pulling heavy equipment than 1981 Pontiac Firebird. 1983 Bentley Mulsanne has automatic transmission and 1981 Pontiac Firebird has manual transmission. 1981 Pontiac Firebird will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1983 Bentley Mulsanne will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1983 Bentley Mulsanne | 1981 Pontiac Firebird | |
| Make | Bentley | Pontiac |
| Model | Mulsanne | Firebird |
| Year Released | 1983 | 1981 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 6750 cc | 5012 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 320 HP | 145 HP |
| Engine RPM | 4200 RPM | 3800 RPM |
| Torque | 617 Nm | 324 Nm |
| Torque RPM | 2400 RPM | 2400 RPM |
| Engine Bore Size | 104.1 mm | 95 mm |
| Engine Stroke Size | 99.1 mm | 88.4 mm |
| Engine Compression Ratio | 8.0:1 | 8.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 220 km/hour | 160 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2410 kg | 1542 kg |
| Vehicle Length | 5290 mm | 5040 mm |
| Vehicle Width | 1940 mm | 1860 mm |
| Vehicle Height | 1490 mm | 1260 mm |
| Wheelbase Size | 3070 mm | 2750 mm |
| Fuel Tank Capacity | 108 L | 79 L |
