1991 BMW Z1 vs. 2004 GMC Sierra
To start off, 2004 GMC Sierra is newer by 13 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 5,359 cc (8 cylinders), 2004 GMC Sierra is equipped with a bigger engine. In terms of performance, 2004 GMC Sierra (295 HP) has 120 more horse power than 1991 BMW Z1. (175 HP) In normal driving conditions, 2004 GMC Sierra should accelerate faster than 1991 BMW Z1. With that said, vehicle weight also plays an important factor in acceleration. 2004 GMC Sierra weights approximately 1129 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.
Because 2004 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1991 BMW Z1. In wet, icy, snow, or gravel driving conditions, 2004 GMC Sierra will offer significantly more control. 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, 2004 GMC Sierra (447 Nm) has 217 more torque (in Nm) than 1991 BMW Z1. (230 Nm). This means 2004 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW Z1.
Compare all specifications:
| 1991 BMW Z1 | 2004 GMC Sierra | |
| Make | BMW | GMC |
| Model | Z1 | Sierra |
| Year Released | 1991 | 2004 |
| Body Type | Roadster | Pickup |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 5359 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 |
| Torque | 230 Nm | 447 Nm |
| Engine Bore Size | 82 mm | 96.1 mm |
| Engine Stroke Size | 78.8 mm | 92 mm |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 2 seats | 6 seats |
| Vehicle Weight | 1250 kg | 2379 kg |
| Vehicle Length | 3960 mm | 5850 mm |
| Vehicle Width | 1810 mm | 2000 mm |
| Vehicle Height | 1280 mm | 1910 mm |
| Wheelbase Size | 2450 mm | 3650 mm |
