Checker Aerobus buyer's guide

Overview

Checker was the Kalamazoo independent that built America's taxi icon: the A-series cabs (the A8/A9/A11 line, 1958–82) with their unmistakable grille and near-zero styling change across decades, the civilian Marathon sedan and wagon sold alongside (1961–82), the Superba before it, and the Aerobus (the stretched, multi-door airport limousine built on the cab chassis — the name under which this series sits). Checkers were engineered for fleet abuse: heavy frames, simple Ford/GM-derived mechanicals (Checker built its own bodies and bought engines — Continental sixes, then Chevrolet sixes and V8s) and doors and wings that unbolted for repair. A Marathon is the usable classic of the family; a genuine Aerobus is a fleet-history artifact; a verified working cab is a piece of New York (or Chicago) street history.

Generations and year breaks

1958–1964 — the A8/A9 era and the Superba/Marathon

• The A8 set the icon's form: the heavy grille, the high roof, the jump-seat cab interior. Civilian sales began with the Superba (1960) and settled as the Marathon (1961).
• Continental's flathead-descended sixes powered the early cars; the Aerobus programme (the A9-series stretches, with up to eight doors in the longest versions) served airports and resorts.

1965–1982 — the A11/A12 and the long close

• Chevrolet engines (the 230/250 sixes, the 283/327/350 V8s, and the Oldsmobile diesel at the very end of the diesel era) replaced the Continentals from 1965 — the single biggest mechanical divide in the line.
• The styling barely moved; the Marathon's Deluxe and the wagons broadened the civilian line; production ended in 1982 with the company itself.
• Aerobus production was always tiny and order-built: each surviving car is effectively a documented individual.

Engines and options that matter

• Continental six (to 1964) — the period taxi engine; parts and knowledge live in the industrial-engine world.
• Chevrolet sixes and V8s (1965 on) — the practical classics; a 350-powered Marathon is a simple, supported car.
• The diesel (Oldsmobile 350 diesel, late cars) — bought knowingly, as with the Seville story: its reputation is documented history.
• Cab specification (meter, jump seats, partition, roof sign) versus civilian Marathon trim is the identity divide — a "cab" built from a Marathon and a Marathon dressed as a cab are both common; the build records and the car's equipment codes tell the truth.

What to check before buying

• Fleet archaeology: working cabs lived harder than any other classic — check the frame for accident repairs, the doors and hinges for a million cycles, and the floors (sheet steel over the frame, replaced in service). A civilian Marathon avoids most of this and is the sane purchase.
• Rust: the frame rails, the body mounts, the floor seams and the rear quarters; the bolt-on wings are a repair mercy but their mounting flanges rot.
• Identity and paperwork: Checker kept build records (the Checker Motor Cars club/archive world holds much of the story); the serial plate (on the firewall/dash area) is the key document, and Aerobus claims particularly need the paper.
• Engine identity: establish which engine family is fitted and whether it's the car's original type — swaps between the Chevy engines are invisible and the Continental-to-Chevy change is a value divide.
• Numbers and specification: taxi equipment (or its mounting scars) tells the car's working history whatever the badges say.
• Parts: the Checker specialist network (and NOS fleet stocks) supports the cars surprisingly well; Aerobus-specific panels and glass are fabricate-or-find territory.