Ford introduced a new Zephyr/Zodiac range in 1966 to replace the Mk III range. Once again the "base" four cylinder model was the Zephyr 4, although a new 1996cc V4 engine replaced the old in-line engine. The Zephyr 4 now came with the option of either a floor or column mounted manual gearchange as well as an automatic a option.
The Zephyr used a new bodyshell which had very bold US influenced styling and featured an enormous bonnet and a blanked grille panel. The range also used all-round disc brakes and fully independent suspension, quite a development on ordinary cars in 1966. Unfortunately the Mk IV range suffered with corrosion problems and the V4 developed a troublesome reputation. Production of the entire range finished in 1972.