1975 Cadillac Eldorado

The 1971-1978 Eldorado represents Cadillac at maximum displacement: the 500 cubic inch V8 remains the largest engine GM ever put in a production car.

By 1975, emissions regulations had sapped the power, but the torque remained — these cars still moved with authority. The 1976 Eldorado convertible was marketed as 'the last American convertible,' creating a speculative frenzy that proved premature but made those cars collectible regardless.

These are full-size personal luxury coupes at their most excessive — massive, comfortable, and completely unconcerned with efficiency.

The sheer size means finding covered storage can be challenging. The vinyl tops trap moisture and promote rust. The 500 V8 is reliable but thirsty. Many have been converted from air suspension to standard springs.

Convertibles command significant premiums over coupes. Well-maintained examples with original interiors are increasingly valued.

These are barges. The 500 V8 makes around 10-12 MPG on a good day. Parts availability is decent — the drivetrain shares much with other GM vehicles. The FWD system is the same chain-drive arrangement as earlier E-bodies.

Comfortable for highway cruising; challenging to park in any modern lot. The 1976 convertibles are collected aggressively; the coupes offer similar character at lower prices.