Production rose 7.8 percent to 134,867, the first rise after six falls in a row from 1967 to 1972. MustangSpecs puts the rise at 7 percent, measured from its own 1972 figure.123
Convertibles rose 85 percent, to 11,853 from 6,401.12
The Mach 1 sold 35,440, just over a quarter of all 1973 Mustangs, and the Grandé 25,274.12
Only four engines were left: the 250 six, the 302 and two versions of the 351.14
The story of the year
The last convertible until 1983
By 1973 the Mustang convertible was the only convertible offered by Ford, and one of the few left in the whole industry.5one source
It was the last Mustang convertible until the 1983 model year: the next generation had none.67
Its successor was already planned as the 1973 car went on sale: the Mustang II, a smaller car based on the Ford Pinto, built for a market turning to economy cars and imports. It arrived for 1974.367
The 1973 from the side. The numbers match the signs below.The 1972, for comparison
1A bigger, body-coloured bumper
Every 1973 has a larger, body-colored urethane front bumper, built for new government impact rules. On the 1972 a body-colored bumper was standard only on the Mach 1 and an option on the others, so the color alone does not prove a 1973.5891011
Upright parking lamps
The parking lamps stand upright at each end of the grille. On the 1971–72 they lie horizontally in the valance below.58910
New grille, framed headlamps
The grille insert has a new cross-hatch pattern, and each headlamp sits in its own square frame beside the grille. The Mach 1 has a black honeycomb grille instead.591012
The Mach 1 stripe
The 1973 Mach 1 has a one-year-only stripe along the lower body, black or argent, with MACH 1 cut out of it at the front of the rear quarter panel.912
18 factory colors, by number of cars. 14 of the 18 color names are confirmed by a second source113; the swatches are approximate screen colors, not paint matches.
Bright Red2B14,827
Blue Glow3K13,201
Medium Copper5M11,923
Wimbledon White9A11,263
Medium Bright Yellow6E11,026
Gold Glow6F10,257
Light Blue3B8,196
Bright Green Glow4B8,141
Medium Ginger5H7,516
Dark Green4Q6,583
Ivy Glow4C6,469
Medium Blue3D5,710
Medium Aqua4N4,436
Saddle Bronze5T3,928
Light Pewter5A3,798
Light Yellow Gold6B3,529
Medium Yellow Gold6C2,139
Medium Green4P1,227
CJ Pony Parts lists 18 colors that add up to 134,169 cars, 99.5 percent of production; the rest are not broken out. Maine Mustang lists 14 of the same names; Bright Green Glow, Light Pewter, Medium Ginger and Light Yellow Gold appear only in CJ Pony Parts' list. Maine Mustang's list also has Medium Brown Metallic, which is not in CJ Pony Parts' list. The counts come from one source.
Ford built 134,867 for the 1973 model year: 76,754 hardtops, 46,260 fastbacks, 11,853 convertibles.123
How can you tell a 1973 Mustang from a 1972?
Four signs, each explained under «How to spot» on this page: a bigger, body-coloured bumper; upright parking lamps; new grille, framed headlamps; the Mach 1 stripe.589101112
What engines did the 1973 Ford Mustang have?
Four engine codes, from the 250 cu in inline-six to the 351 cu in V8. The engine table on this page gives every code and rating, and the rulings cover the disputed ones.14
How much did a 1973 Ford Mustang cost new?
Base retail prices, before options: hardtop $2,760; Grandé $2,946; fastback $2,820; Mach 1 $3,088; convertible $3,102.1one source
What colors did the 1973 Ford Mustang come in?
CJ Pony Parts counts 18 factory colors. The most common was Bright Red, on 14,827 cars.13one source
Where is the VIN on a 1973 Ford Mustang?
On the top edge of the dash, driver's side, visible through the windshield.14one source
Where the sources disagree
Every conflict we found for 1973, and how we settled it. All rulings.
Settled
1973 total production
Our ruling: 134,867, which three sources give. Wikipedia's figure is 50 lower.
Dearborn, San Jose and Edison/Metuchen for the whole 1971–73 generation4one source
Settled
1973 Mach 1 and Grandé production
Our ruling: We use 35,440 Mach 1s and 25,274 Grandés, which Maine Mustang, CJ Pony Parts and MustangSpecs give alike. Over-Drive's figures stand alone.