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Unsourced material may be challenged and removed. Manumatic, a portmanteau of the words manual and automatic, is a term referring to a class of automotive transmission. Manumatic refers to an automatic transmission that allows convenient driver control of gear selection. Different car manufacturers use a variety of labels for their manumatic transmissions, such as ‘Tiptronic’, ‘Geartronic’, ‘Touchshift’, ‘Sportronic’, ‘clutchless-manual’ and others.
Hydraulically-coupled Manumatics and most semi-automatic transmissions also provide the option of operating in the same manner as a conventional automatic transmission, by allowing the transmission’s computer to select gear changes. The Automotive Products Manumatic and Newtondrive systems are also known as “two-pedal transmissions”. They relieve the driver of the need for skill in operating clutch and engine speed in conjunction with the gear change. A clutch servo powered by the vacuum at the induction manifold operated the automatic clutch – a conventional clutch incorporating centrifugal operation.