Nearly 300,000 examples of the Mustang were produced in 1969. The base engine was the overhead valve six-cylinder unit with a displacement size of 200 cubic inches and delivered 115 horsepower. Other engine options included the 302, 351, 390, 428, and the 429 CID in various setups with horsepower ranging from 220 to 370 horsepower. Body styles included a hardtop coupe, fastback coupe, convertible, Grande hardtop, and Mach 1 Fastback. Exterior changes were rather significant, now with quad headlights and the side scoop was repositioned higher on the rear fenders for fastback models. They now faced rearward on the convertibles and hardtops.

1969 was certainly the benchmark year for Ford Mustang in its proliferation of performance names and engines. There were no less than 6 factory performance Mustang models offered including the GT, Boss 302, Boss 429, Mach 1, Shelby GT350 and Shelby GT500. The Mach 1 proved popular which ultimately lead Ford to discontinue the GT model after 1969. A total of 5,396 examples of the GT were produced in 1969 versus the 72,458 sales for the Mach 1. The GT badge would not re-appear on the Mustang again until 1982.

Mach 1
The Mach 1 package was only available in the 'Sportsroof' body style (previously known as the 'Fastback'). Along with the V8 engine, numerous visual and performance enhancements were added such as matte black hood treatment with hood pins, hood scoop (including optional Shaker scoop), competition suspension, chrome pop-open gas cap, revised wheels with Goodyear Polyglas tires, chrome exhaust tips (except 351W 2V), deluxe interior, unmissable livery and dealer optional chin spoiler, rear deck spoiler, and rear window louvers. The 351 cubic-inch Windsor engine was optional (351W) 2V with a 3-speed transmission, and a 9-inch 28 spline open rear axle. Buyers could optional select the 351W 4V, 390 cubic-inch FE, 428 CID Cobra Jet 4V with or without Ram Air, or the 'drag pack' 428 Super Cobra Jet engine. Depending on the powertrain choices, the suspension was upgraded to varying degrees. Big block cars had front shock tower reinforcement, thicker sway bars (no rear bar for 69), and heavier springs and shocks. Cars fitted with the 428 CJ/SCJ 4-speed came with staggered rear shocks.

The Mach 1s had a cosmetic hood scoop that had integrated turn-signal lights mounted in the back. A more functional option was the 'Shaker hood.' The interior came complete with teak wood grain details, full sound-deadening material and high-back sport bucket seats.