1970 Oldsmobile Cutlass Supreme Convertible for Sale With 18,000 Miles ShownAutoblogKyle EdwardSat, September 19, 2026 at 11:12 PM UTCAdd us on GoogleAutoblog and Yahoo may earn commission from links in this article.The 1970 Oldsmobile Cutlass Supreme convertible is a handsome slice of open-top Americana, and this one wears an eye-catching W-31-style presentation. Refurbished with a fuel-injected 350 Rocket V8, it is a striking cruiser. It sits on Bring a Trailer at $25,000 with three days to go.1970 Oldsmobile Cutlass Supreme ConvertibleBring a TrailerWhat it's worth right nowThe third-generation Cutlass Supreme convertible has become an appreciating and accessible classic. According to Classic.com and current listings, nice 1970 Cutlass Supreme convertibles generally trade from the low $20,000s into the high $30,000s, with genuine 442 and W-31 cars commanding considerably more.AdvertisementAdvertisementThe attractive refurbishment and presentation support the value, tempered by a few items. A handsome, running W-31-style convertible is exactly what cruisers want, but the rolled odometer and quirks are factors. Fair value lands at $22,000 to $38,000, with $28,500 the most likely close.1970 Oldsmobile Cutlass Supreme ConvertibleBring a TrailerCondition and detailsThe presentation is eye-catching. Refurbished in 2010, the car was refinished in blue with white W-31-style stripes and emblems and re-trimmed in ivory vinyl, and it wears a ram-air hood, sport mirrors, and Super Stock III wheels, with front bucket seats and a center console inside.1970 Oldsmobile Cutlass Supreme ConvertibleBring a TrailerThe drivetrain is a usable, updated setup. The 350 Rocket V8 was rebuilt with W-31-specification components and fitted with a ram-air induction system and FiTech fuel injection for easy starting and drivability, backed by a TH350 automatic and a 12-bolt rear axle, and it is worth noting the W-31-style trim is a tribute rather than a genuine W-31 or 442.1970 Oldsmobile Cutlass Supreme ConvertibleBring a TrailerA few points warrant attention. The five-digit odometer shows 18,000 miles and is believed to have rolled over, so the true total is unknown, the power top works intermittently, the battery drains when the car sits for extended periods, and the refurbishment is now some 15 years old.1970 Oldsmobile Cutlass Supreme ConvertibleBring a TrailerAdvertisementAdvertisementThe offerSpecificationDetailMakeOldsmobileModelCutlass Supreme ConvertibleYear1970Mileage18,000 miles shownEngine350-cubic-inch Rocket V8PowerNot specified by the sellerTransmission3-speed automaticDrive typeRear-wheel driveExterior colorBlue with White stripesInterior colorIvoryCurrent bid$25,000, with three days leftInterested in this 1970 Oldsmobile Cutlass Supreme Convertible? View the listing here.What makes the Cutlass Supreme uniqueThe Cutlass Supreme sat at the top of Oldsmobile's mid-size range, a premium, well-appointed model that blended genuine style with the torquey V8 performance of its era. For 1970, revamped body panels and new rooflines gave the Cutlass a handsome, purposeful look, and the convertible body style added open-top appeal to an already-attractive package. With its Rocket V8, comfortable four-seat cabin, and the option of bucket seats and a console, it offered a compelling mix of comfort, style, and performance that has aged into a genuinely desirable classic.1970 Oldsmobile Cutlass Supreme ConvertibleBring a TrailerThis example enhances that appeal with an eye-catching W-31-style presentation and a sensibly updated drivetrain. The blue-and-white stripe treatment evokes Oldsmobile's performance heritage, while the FiTech fuel injection and ram-air induction make the rebuilt 350 easy to live with and enjoy. That combination of handsome convertible styling, torquey V8 cruising, and striking looks is exactly what makes a well-refurbished Cutlass Supreme convertible such an appealing open-top classic.My takeThis is a handsome and eye-catching open-top cruiser, and the appeal is a refurbished Cutlass Supreme convertible with a striking W-31-style look and a usable, updated drivetrain. The fuel-injected 350 Rocket, the ram-air hood, the blue-and-white presentation, and the bucket-seat interior make it a genuinely appealing summer cruiser.AdvertisementAdvertisementFair value sits at $22,000 to $38,000, with $28,500 the most likely result, and the crux is the rolled odometer and the few quirks rather than the car's fundamental charm. Before bidding, treat the mileage as unknown, sort the intermittent top and battery drain, understand the W-31 look is a tribute, and get an inspection. Handle that, and this is a handsome, striking, and genuinely fun open-top classic.Disclaimer: This post is for informational purposes only. We are not a dealership or broker. All vehicle specifications, pricing, and availability are subject to change without notice. We are not responsible for typographical errors, omissions, or the accuracy of the provided information. Please verify all details directly with the seller.Autoblog aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission.This story was originally published by Autoblog on Sep 19, 2026, where it first appeared in the Car Buying section. Add Autoblog as a Preferred Source by clicking here.