2007 Kia Optima vs. 1975 Opel Kadett
To start off, 2007 Kia Optima is newer by 32 year(s). Which means there will be less support and parts availability for 1975 Opel Kadett. In addition, the cost of maintenance, including insurance, on 1975 Opel Kadett would be higher. At 2,654 cc (6 cylinders), 2007 Kia Optima is equipped with a bigger engine. In terms of performance, 2007 Kia Optima (185 HP @ 6000 RPM) has 134 more horse power than 1975 Opel Kadett. (51 HP @ 5600 RPM). In normal driving conditions, 2007 Kia Optima should accelerate faster than 1975 Opel Kadett. With that said, vehicle weight also plays an important factor in acceleration. 2007 Kia Optima weights approximately 667 kg more than 1975 Opel Kadett. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1975 Opel Kadett 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 1975 Opel Kadett. However, in wet, icy, snow, or gravel driving conditions, 2007 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, 2007 Kia Optima (247 Nm @ 4000 RPM) has 166 more torque (in Nm) than 1975 Opel Kadett. (81 Nm @ 3400 RPM). This means 2007 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 1975 Opel Kadett.
Compare all specifications:
| 2007 Kia Optima | 1975 Opel Kadett | |
| Make | Kia | Opel |
| Model | Optima | Kadett |
| Year Released | 2007 | 1975 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2654 cc | 1196 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 185 HP | 51 HP |
| Engine RPM | 6000 RPM | 5600 RPM |
| Torque | 247 Nm | 81 Nm |
| Torque RPM | 4000 RPM | 3400 RPM |
| Engine Bore Size | 86.7 mm | 79 mm |
| Engine Stroke Size | 75 mm | 61 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1487 kg | 820 kg |
| Vehicle Length | 4740 mm | 4150 mm |
| Vehicle Width | 1810 mm | 1590 mm |
| Vehicle Height | 1490 mm | 1340 mm |
| Wheelbase Size | 2730 mm | 2410 mm |
| Fuel Tank Capacity | 62 L | 43 L |
