1991 BMW Z1 vs. 2005 Chevrolet Avalanche
To start off, 2005 Chevrolet Avalanche is newer by 14 year(s). Which means there will be less support and parts availability for 1991 BMW Z1. In addition, the cost of maintenance, including insurance, on 1991 BMW Z1 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 120 more horse power than 1991 BMW Z1. (175 HP @ 5800 RPM) In normal driving conditions, 2005 Chevrolet Avalanche should accelerate faster than 1991 BMW Z1. With that said, vehicle weight also plays an important factor in acceleration. 2005 Chevrolet Avalanche weights approximately 1217 kg more than 1991 BMW Z1. 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 217 more torque (in Nm) than 1991 BMW Z1. (230 Nm). This means 2005 Chevrolet Avalanche will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW Z1. 2005 Chevrolet Avalanche has automatic transmission and 1991 BMW Z1 has manual transmission. 1991 BMW Z1 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:
| 1991 BMW Z1 | 2005 Chevrolet Avalanche | |
| Make | BMW | Chevrolet |
| Model | Z1 | Avalanche |
| Year Released | 1991 | 2005 |
| Body Type | Roadster | Pickup |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 5325 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 175 HP | 295 HP |
| Engine RPM | 5800 RPM | 5600 RPM |
| Torque | 230 Nm | 447 Nm |
| Engine Bore Size | 82 mm | 96 mm |
| Engine Stroke Size | 78.8 mm | 92 mm |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 6 seats |
| Vehicle Weight | 1250 kg | 2467 kg |
| Vehicle Length | 3960 mm | 5640 mm |
| Vehicle Width | 1810 mm | 2030 mm |
| Vehicle Height | 1280 mm | 1880 mm |
| Wheelbase Size | 2450 mm | 3310 mm |
