In 1975 the brakes were improved and the hand brake now worked directly on the primary brake pads instead of on separate pads acting as drum brakes inside the brake rotor. The 99 was now available in two versions, one with a carburetor with and a fuel-injected version using Bosch K-Jetronic fuel injection system giving . In February a model using Zenith-Stromberg 150CDS(E) dual carburetors was introduced. It was only available for the Combi-coupé and has . The Combi-coupé had been fitted with a unique grille in 1974; this was now applied across the range.