The Muscle Cars So Rare You'll Probably Never See One

The golden age of American muscle cars is famous for giving everyday drivers access to jaw-dropping power. But as Detroit's Big Three fought for supremacy in the 1960s, a handful of factories went completely off the rails. The result? Some of the rarest production cars ever built — models so scarce that most enthusiasts will only ever see them in photos.

We're talking about factory-backed, street-legal monsters that almost nobody ordered. Here are the 10 rarest muscle cars from each major American automaker, ranked from merely impossible to nearly mythical.

At the bottom of the list sits the 1966 Ford Fairlane 500 R-Code, with just 57 units built. Ford stuffed a race-bred 427 Side-Oiler V8 into the compact Fairlane to homologate it for NHRA racing, and those engines routinely pushed over 500 horsepower on the dyno. Rarer still is the 1966 Oldsmobile 442 W-30, with only 54 factory-built examples.

Olds added a Ram-Air cold induction system and a race camshaft, then stripped out power brakes and A/C. Then there's the 1969 AMC AMX "California 500 Special" — just 32 were built as pace car replicas for a single Southern California dealership. And the 1966 Buick Wildcat GS Super Wildcat?

Only 21 left the factory with a dual quad-carb setup that put it in the same league as the legendary 426 Hemi.

The numbers get even smaller from there. Pontiac built exactly five 1969 GTO Judge Ram Air IV convertibles — one of which sold for $682,000 at auction. Plymouth made just three 1970 Road Runner HEMI convertibles before killing the convertible option entirely. Dodge went even further: only two 1970 Coronet R/T HEMI convertibles exist.

One is a Sublime green automatic; the other is a Dark Tan Metallic four-speed. Chevrolet built exactly one 1968 Camaro Z/28 convertible — a special COPO order for a GM executive, packed with luxury features and 4-wheel disc brakes. Chrysler also built one 1970 300 Hurst convertible as a promotional parade car, complete with a power top and a 440 TNT V8.

And the rarest of them all? A 1967 Mercury Comet Capri 427 W-Code. Just one was ever built, and it has never been publicly sold. Somewhere out there, that single Capri is hiding.