For the 1965 model year, all Oldsmobiles would receive new styling, and the Starfire Coupe would receive a modified version of the 1963–1964 unique roofline with an inversely curved rear window.
The Hardtop Sports Coupe body-style was again shared with the Jetstar I. Other 88 models adopted a Holiday Hardtop Coupe body-style that featured more of a fastback roof design, while the Ninety-Eight featured a more squared-off formal roof-line.

A new version of the Rocket V8 engine was offered for the 1965 model year, this one measuring 425 cu in (7.0 l) displacement, still using a Rochester 4-barrel carburetor, and generating 375 hp (280 kW) at 4800 rpm.
This was still the most powerful engine in the Oldsmobile lineup and used only in the Starfire and the Jetstar I. Also new for 1965 was the three-speed Turbo Hydra-Matic automatic transmission which replaced the previous fluid-coupling Hydra-Matic used by Oldsmobile since 1940.
Added to the option list for the first time on Starfires and other B-body cars was a four-speed manual transmission with Hurst shifter that was rarely ordered.

1965 sales were 13,024 for the coupe and 2,236 for the convertible.
For the 1965 model year, all Oldsmobiles would receive new styling, and the Starfire Coupe would receive a modified version of the 1963–1964 unique roofline with an inversely curved rear window. The Hardtop Sports Coupe body-style was again shared with the Jetstar I. Other 88 models adopted a Holiday Hardtop Coupe body-style that featured more of a fastback roof design, while the Ninety-Eight featured a more squared-off formal roof-line.
A new version of the Rocket V8 engine was offered for the 1965 model year, this one measuring 425 cu in (7.0 l) displacement, still using a Rochester 4-barrel carburetor, and generating 375 hp (280 kW) at 4800 rpm. This was still the most powerful engine in the Oldsmobile lineup and used only in the Starfire and the Jetstar I. Also new for 1965 was the three-speed Turbo Hydra-Matic automatic transmission which replaced the previous fluid-coupling Hydra-Matic used by Oldsmobile since 1940. Added to the option list for the first time on Starfires and other B-body cars was a four-speed manual transmission with Hurst shifter that was rarely ordered.
1965 sales were 13,024 for the coupe and 2,236 for the convertible.
Oldsmobile Starfire