1978 Dodge Diplomat

The Dodge Diplomat was introduced in 1977. For 1978, a four-door station wagon was added to the bodystyle lineup, which also consisted of a coupe and sedan. The Diplomat was available in three trim levels, the base, 'S', and 'Medallion.' The station wagon was available only on the base trim. The base engine was a six-cylinder unit that displaced 225 cubic-inches and offered 110 horsepower. Optional V8s and automatic transmissions were available.

The Medallion trim added several luxurious upgrades including a remote-control driver's mirror and trunk dress-up package, dual chrome quarter-window stripes on two-door models, wheel opening moldings, bodyside tape accent stripes on two-doors, and lower deck accent stripes on four-doors. Standard equipment included cloth/velour 60/40 seating, door-pillar assist handles, courtesy lamps, and premium wheel covers. They had a space-saving spare tire, wide rocker moldings, and dual horns.

Pricing for the Diplomat began at just under $5,000 for the 2-door Coupe. The most popular body style was the base 4-door Sedan which saw 12,951 examples sold. This was followed by the 2-door Medallion which earned 11,986 sales. 11,294 examples of the base 2-door Coupe were built.


By Daniel Vaughan | Jul 2015

Related Reading : Dodge Diplomat History

Dodge first used the name Diplomat in 1950 to designate their 2-door hardtop bodystyle. The name would endure until 1954. It re-appeared in 1975 as a trim package on the Royal Monaco two-door hardtop. In 1977, it became its own model line and served as a replacement for the Coronet in Dodges mid-sized line-up. It was based on the Dodge Aspen and wore an M-body. Mounted on the bonnet was a....
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Concepts by Dodge

Dodge Monthly Sales Volume

June 2019
38,561
May 2019
47,759
April 2019
31,262
March 2019
46,367
February 2019
37,073
January 2019
27,077
Additional Sales Volume Data


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Performance and Specification Comparison

Price Comparison

1978 Diplomat
$5,520-$109,800
1978 Dodge Diplomat Price Range: $4,770 - $5,520

Model Year Production

#1#2#3Dodge
1983Renault (1,491,853)Chevrolet (1,175,200)Toyota (1,068,321)304,464
1982Renault (1,491,853)Chevrolet (1,297,357)Toyota (1,068,321)
1981Chevrolet (1,673,093)Renault (1,295,713)Toyota (1,068,321)340,899
1980Chevrolet (2,288,745)Renault (1,492,339)Ford (1,162,275)308,638
1979Chevrolet (2,284,749)Ford (1,835,937)Renault (1,405,330)404,266
1978Chevrolet (2,375,436)Ford (1,923,655)Renault (1,240,941)467,720
1977Chevrolet (2,543,153)Toyota (1,884,260)Ford (1,840,427)526,254
1976Chevrolet (2,103,862)Toyota (1,884,260)Ford (1,861,537)430,641
1975Chevrolet (1,755,773)Toyota (1,714,836)Ford (1,569,608)377,462
1974Chevrolet (2,333,839)Ford (2,179,791)Renault (1,355,799)477,728
1973Chevrolet (2,579,509)Ford (2,349,815)Fiat (1,390,251)675,161

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