1981 BMW 520 vs. 2005 Chevrolet Avalanche
To start off, 2005 Chevrolet Avalanche is newer by 24 year(s). Which means there will be less support and parts availability for 1981 BMW 520. In addition, the cost of maintenance, including insurance, on 1981 BMW 520 would be higher. At 5,325 cc (8 cylinders), 2005 Chevrolet Avalanche is equipped with a bigger engine. In terms of performance, 2005 Chevrolet Avalanche (295 HP @ 5600 RPM) has 172 more horse power than 1981 BMW 520. (123 HP @ 5800 RPM) In normal driving conditions, 2005 Chevrolet Avalanche should accelerate faster than 1981 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2005 Chevrolet Avalanche weights approximately 1247 kg more than 1981 BMW 520. 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 Chevrolet Avalanche (447 Nm) has 277 more torque (in Nm) than 1981 BMW 520. (170 Nm). This means 2005 Chevrolet Avalanche will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 520. 2005 Chevrolet Avalanche has automatic transmission and 1981 BMW 520 has manual transmission. 1981 BMW 520 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Chevrolet Avalanche will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1981 BMW 520 | 2005 Chevrolet Avalanche | |
| Make | BMW | Chevrolet |
| Model | 520 | Avalanche |
| Year Released | 1981 | 2005 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 5325 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 123 HP | 295 HP |
| Engine RPM | 5800 RPM | 5600 RPM |
| Torque | 170 Nm | 447 Nm |
| Engine Bore Size | 80 mm | 96 mm |
| Engine Stroke Size | 66 mm | 92 mm |
| Engine Compression Ratio | 9.8:1 | 9.5:1 |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1220 kg | 2467 kg |
| Vehicle Length | 4630 mm | 5640 mm |
| Vehicle Width | 1710 mm | 2030 mm |
| Vehicle Height | 1430 mm | 1880 mm |
| Wheelbase Size | 2630 mm | 3310 mm |
| Fuel Tank Capacity | 70 L | 117 L |
