
Mid-size—also known as intermediate—is a
vehicle size class which originated in the United States and is used for cars larger than
compact cars and smaller than
full-size cars. "Large family car" is a UK term and a part of the
D-segment in the European car classification. Mid-size cars are manufactured in a variety of body styles, including
sedans,
coupes,
station wagons,
hatchback
A hatchback is a car body configuration with a rear door that swings upward to provide access to a cargo area. Hatchbacks may feature fold-down second row seating, where the interior can be reconfigured to prioritize passenger or cargo volume. ...
s, and
convertible
A convertible or cabriolet () is a passenger car that can be driven with or without a roof in place. The methods of retracting and storing the roof vary among eras and manufacturers.
A convertible car's design allows an open-air driving ex ...
s.
Compact executive cars can also fall under the mid-size category.
History

The automobile that defined this size in the
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
was the
Rambler Six that was introduced in 1956, although it was called a "compact" car at that time. Much smaller than any standard contemporary full-size cars, it was called a compact to distinguish it from the small imported cars that were being introduced into the marketplace.
By the early 1960s, the car was renamed the
Rambler Classic and while it retained its basic dimensions, it was now competing with an array of new "intermediate" models from General Motors, Ford, and Chrysler. The introduction of the 1962
Ford Fairlane was viewed by consumers as too close to the compact
Falcon
Falcons () are birds of prey in the genus ''Falco'', which includes about 40 species. Falcons are widely distributed on all continents of the world except Antarctica, though closely related raptors did occur there in the Eocene.
Adult falcons ...
in size and performance as well as too close to the full-sized
Ford models in price.
It was the introduction of General Motors "
senior compacts" that grew the mid-size market segment as the line of cars themselves kept increasing in size.
By 1965, these
GM "A platform" mid-size models matched the size of 1955 full-size cars.
During the 1970s, the intermediate class in the U.S. was generally defined as vehicles with wheelbases between and . Once again, the cars grew and by 1974 they were "about as large as the full-size cars of a decade or so ago ... best sellers include
Ford Torino,
Chevrolet Chevelle,
AMC Matador
The AMC Matador is a car model line that was manufactured and marketed by American Motors Corporation (AMC) across two generations, 1971–1973 (mid-size) and 1974–1978 (full-size), in two-door hardtop (first generation) and coupe (second gen ...
,
Plymouth Satellite ..." The domestic manufacturers began changing the definition of "medium" as they developed new models for an evolving market place.
A turning point occurred in the late 1970s, when rising fuel costs and government fuel economy regulations caused all car classes to shrink, and in many cases to blur. Automakers moved previously "full-size" nameplates to smaller
platforms such as the
Ford LTD II and the
Plymouth Fury. A comparison test by ''
Popular Science
''Popular Science'' (also known as ''PopSci'') is an American digital magazine carrying popular science content, which refers to articles for the general reader on science and technology subjects. ''Popular Science'' has won over 58 awards, incl ...
'' of four intermediate sedans (the 1976 AMC Matador,
Chevrolet Malibu, Ford Torino, and
Dodge Coronet) predicted that these will be the "big cars of the future." By 1978, General Motors made its intermediate models smaller.

New "official" size designations in the U.S. were introduced by the
EPA
The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it be ...
, which defined market segments by passenger and cargo space. Formerly mid-sized cars that were built on the same platform, like the
AMC Matador
The AMC Matador is a car model line that was manufactured and marketed by American Motors Corporation (AMC) across two generations, 1971–1973 (mid-size) and 1974–1978 (full-size), in two-door hardtop (first generation) and coupe (second gen ...
sedan, had a combined passenger and cargo volume of , and were now considered "full-size" automobiles.
Cars that defined the mid-size market in the 1980s and 1990s included the Chrysler K-Cars (
Dodge Aries
The Plymouth Reliant and Dodge Aries are mid size cars introduced for model year 1981 as the first " K-cars" manufactured and marketed by the Chrysler Corporation. The Reliant and Aries were the smallest cars to have the traditional 6 passeng ...
and
Plymouth Reliant), the
Ford Taurus, and the
Toyota Camry
The Toyota Camry (; Japanese: トヨタ・カムリ ''Toyota Kamuri'') is an automobile sold internationally by the Japanese auto manufacturer Toyota since 1982, spanning multiple generations. Originally compact car, compact in size (narrow-body ...
, which was upsized into the midsize class in 1991. The Taurus and Camry came to define the mid-size market for decades.
Mid-size cars were the most popular category of cars sold in the United States, with 27.4 percent during the first half of 2012, ahead of crossovers at 19 percent.
Current definition

The
United States Environmental Protection Agency
The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it ...
(EPA) ''Fuel Economy Regulations for 1977 and Later Model Year'' (dated July 1996) includes definitions for classes of automobiles. Based on the combined passenger and
cargo
Cargo consists of bulk goods conveyed by water, air, or land. In economics, freight is cargo that is transported at a freight rate for commercial gain. ''Cargo'' was originally a shipload but now covers all types of freight, including tran ...
volume, mid-size cars are defined as having an ''interior volume index'' of .
See also
*
Car classification
*
Vehicle size class
References
External links
Vehicles listed by EPA class (1984-present)
{{Automobile configuration
Vehicles introduced in 1956
Car classifications