2007 Kia Optima vs. 1979 Mazda 121
To start off, 2007 Kia Optima is newer by 28 year(s). Which means there will be less support and parts availability for 1979 Mazda 121. In addition, the cost of maintenance, including insurance, on 1979 Mazda 121 would be higher. At 2,399 cc (4 cylinders), 2007 Kia Optima is equipped with a bigger engine. In terms of performance, 2007 Kia Optima (162 HP @ 5800 RPM) has 72 more horse power than 1979 Mazda 121. (90 HP @ 4800 RPM). In normal driving conditions, 2007 Kia Optima should accelerate faster than 1979 Mazda 121.
Because 1979 Mazda 121 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 1979 Mazda 121. 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 (222 Nm @ 4260 RPM) has 62 more torque (in Nm) than 1979 Mazda 121. (160 Nm @ 3000 RPM). This means 2007 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 1979 Mazda 121.
Compare all specifications:
| 2007 Kia Optima | 1979 Mazda 121 | |
| Make | Kia | Mazda |
| Model | Optima | 121 |
| Year Released | 2007 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 2399 cc | 1970 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 162 HP | 90 HP |
| Engine RPM | 5800 RPM | 4800 RPM |
| Torque | 222 Nm | 160 Nm |
| Torque RPM | 4260 RPM | 3000 RPM |
| Engine Compression Ratio | 10.5:1 | 8.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Length | 4740 mm | 4510 mm |
| Vehicle Width | 1810 mm | 1690 mm |
| Vehicle Height | 1490 mm | 1350 mm |
| Wheelbase Size | 2730 mm | 2520 mm |
