Cars come with different transmission designs. Some include transmissions to provide efficient gas mileage, while others package additional strength for towing and torque. Both manual-transmission and automatic-transmission vehicles come in four- and five-speed versions. The benefits and drawbacks depend more on what a person wants from a car versus inherent performance.
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Starting off in older cars from pre-1975, the four-speed transmission was mainly found in higher-performance vehicles rather than stock commuter cars. In modern times, a four-speed transmission can still be found in both domestic and imported cars. Four-speed engines provide better torque than their advanced cousins, but they give up mileage efficiency at the higher speeds.
Toyota began introducing more advanced designs in the mid-1970s outside of sports cars, placing the advanced transmission in both mass-market vehicles and pickup trucks. The highest gear for this kind of set-up is usually referred to as an overdrive gear. Today's modern cars come standard with a five-speed set-up to maximise fuel performance for highway use.
Cost and Maintenance
The five-speed transmission will produce lower costs in fuel consumption. Due to more technical parts and design, however, repair work on a five-speed transmission tends to be costlier in labour and parts versus a four-speed.
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