1990 BMW Z1 vs. 2006 Kia Optima
To start off, 2006 Kia Optima is newer by 16 year(s). Which means there will be less support and parts availability for 1990 BMW Z1. In addition, the cost of maintenance, including insurance, on 1990 BMW Z1 would be higher. At 2,671 cc (6 cylinders), 2006 Kia Optima is equipped with a bigger engine. In terms of performance, 1990 BMW Z1 (175 HP @ 5800 RPM) has 5 more horse power than 2006 Kia Optima. (170 HP @ 6000 RPM). In normal driving conditions, 1990 BMW Z1 should accelerate faster than 2006 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2006 Kia Optima weights approximately 238 kg more than 1990 BMW Z1.
Because 1990 BMW Z1 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1990 BMW Z1. However, in wet, icy, snow, or gravel driving conditions, 2006 Kia Optima, being front wheel drive (FWD), will offer much better control with better grip. 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, 2006 Kia Optima (245 Nm @ 4000 RPM) has 15 more torque (in Nm) than 1990 BMW Z1. (230 Nm @ 4000 RPM). This means 2006 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 1990 BMW Z1.
Compare all specifications:
| 1990 BMW Z1 | 2006 Kia Optima | |
| Make | BMW | Kia |
| Model | Z1 | Optima |
| Year Released | 1990 | 2006 |
| Body Type | Roadster | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 2671 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 175 HP | 170 HP |
| Engine RPM | 5800 RPM | 6000 RPM |
| Torque | 230 Nm | 245 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 82 mm | 86.7 mm |
| Engine Stroke Size | 78.8 mm | 75 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Front |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 1250 kg | 1488 kg |
| Vehicle Length | 3960 mm | 4730 mm |
| Vehicle Width | 1810 mm | 1820 mm |
| Vehicle Height | 1280 mm | 1420 mm |
| Wheelbase Size | 2450 mm | 2710 mm |
