Noun
(attributive, of a transmission) Having four forward speeds.
My car has a four-speed transmission. It is not as efficient as my daughter's five-speed.
A vehicle with a transmission that has four forward speeds. It might or might not be a manual transmission.
Source: en.wiktionary.org1977–1982 Porsche 924 (Australia) Porsche 924 Le Mans (1980 – Limited Edition) The original design used an Audi-sourced four-speed manual transmission from a front wheel drive car but now placed and used as a rear transaxle. Source: Internet
A retrograde step was the replacement of the four-speed gearbox with a three-speed unit, with a column shift lever. Source: Internet
By 2007, I was disenchanted with the four-speed manual tranny on Ol' White; hey, I got old! Source: Internet
Transmissions include a six-speed manual (standard on all V6-equipped Dakota models except the Laramie), a four-speed automatic with overdrive (available with the V6 engine) and the five-speed automatic (available on V8 models) of my sample unit. Source: Internet
The four-speed manual was the only transmission available for the initial 1976 model, later this was replaced by a five-speed dog-leg unit. Source: Internet
Behind that is a four-speed 4R70W automatic that feeds all four wheels through a standard BorgWarner 4406 transfer case. Source: Internet