The series III had the same body and engine options as the preceding IIa, including station wagons and the One-Ton versions. Little changed cosmetically from the IIA to the series III.
The series III is the most common series vehicle, with 440,000 of the type built from 1971 to 1985. The headlights were moved to the wings on late production IIA models from 1968/9 onward (ostensibly to comply with Australian, American and Dutch lighting regulations) and remained in this position for the series III. The traditional metal grille, featured on the series I, II and IIA, was replaced with a plastic one for the series-III model.
The 2.25-litre engine had its compression raised from 7:1 to 8:1, increasing the power slightly (the high compression engine had been an optional fit on the IIa model for several years). During the series-III production run from 1971 until 1985, the 1,000,000th Land Rover rolled off the production line in 1976.