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Pontiac Bonneville I gallery (1957–1958)

The first-generation full-size Pontiac flagship that debuted as a fuel-injected luxury convertible before becoming a standalone nameplate.

All photos 53 I 10 1957–1958 II 0 1959–1960 III 0 1961–1964 IV 29 1965–1970 V 0 1971–1976 VI 0 1977–1981 VII (G-body) 0 1982–1986 VIII (H-body) 0 1987–1991 IX (H-body) 0 1992–1999 X (G-body) 8 2000–2005
Pontiac Bonneville I photo 83224 2048 x 1536 40 Bonneville Convertible — 1957
Pontiac Bonneville I photo 83223 2048 x 1536 38 Bonneville Convertible — 1957
Pontiac Bonneville I photo 83222 2048 x 1536 37 Bonneville Convertible — 1957
Pontiac Bonneville I photo 83221 2048 x 1536 42 Bonneville Convertible — 1957
Pontiac Bonneville I photo 83220 2048 x 1536 30 Bonneville Convertible — 1957
Pontiac Bonneville I photo 83219 2048 x 1536 38 Bonneville Convertible — 1957
Pontiac Bonneville I photo 83218 2048 x 1536 35 Bonneville Convertible — 1957
Pontiac Bonneville I photo 83217 2048 x 1536 33 Bonneville Convertible — 1957
Pontiac Bonneville I photo 83216 2048 x 1536 38 Bonneville Convertible — 1957
Pontiac Bonneville I photo 83215 2048 x 1536 27 Bonneville Convertible — 1957

The Pontiac Bonneville first appeared for the 1957 model year as an ultra-luxurious, limited-production performance halo convertible known as the Star Chief Custom Bonneville. Built on GM's full-size B-body body-on-frame architecture, it gained standalone model status in 1958, expanding its body offerings to include two-door hardtop coupes, four-door hardtop sedans, and station wagons. The 1957 models were legendary for featuring Pontiac's 347 cubic inch (5.7L) V8 equipped with mechanical Rochester fuel injection, producing a formidable 315 horsepower. For 1958, engine displacement grew to 370 cubic inches (6.1L), offering optional Tri-Power triple two-barrel carburetion rated at up to 330 horsepower. Power was routed through a 4-speed Strato-Flight Hydra-Matic automatic or a standard 3-speed manual gearbox. The 1958 redesign embraced space-age cues with quad headlights, sculptured tailfins, concave side panels, and opulent interiors wrapped in leather and chrome trim. Primarily sold in the United States and Canadian markets, this initial generation established Bonneville as the brand's performance-luxury benchmark for future eras.