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Dodge Diplomat MPG

EPA fuel economy for 18 Dodge Diplomat trims sold from 1984 to 1989. Best ever: 18 MPG (1988 Diplomat). Latest model year 1989: 12 to 17 MPG combined across 3 trims.

18best combined MPG (1988)
16 / 21city / highway of the best trim
12lowest combined MPG (1989)
6model years rated
$4,840a year to fuel, cheapest 1989 trim at EPA prices

Dodge Diplomat fuel cost calculator

Enter what you pay for fuel and how far you drive in a year. The starting prices are the ones the EPA uses for its own yearly fuel-cost estimates. Every cost on this page updates as you type.

At $5.49 a gallon for premium and 15,000 miles a year, the cheapest 1989 Dodge Diplomat to fuel is the Diplomat, 5.2 L, 8 cyl (17 MPG) at $4,840 a year. The Diplomat, 5.2 L, 8 cyl (12 MPG) costs $6,860, so the thriftier trim saves $2,020 a year and $10,100 over five years.

1989 trimEngineTransmissionDriveFuelCombCost/yrvs cheapest
Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium17$4,840cheapest
Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium14$5,880+$1,040
Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium12$6,860+$2,020

Cost per year is miles per year divided by the EPA combined rating, times your fuel price; electric vehicles use the EPA's kWh per 100 miles instead. Rounded to the nearest $10. Your prices are kept in this browser only.

Dodge Diplomat MPG by year

YearBest combinedCityHwyBest trim that yearTrims
1989171520Diplomat, 5.2 L, 8 cyl, Auto 3-spd3
1988181621Diplomat, 5.2 L, 8 cyl, Auto 3-spd3
1987171520Diplomat, 5.2 L, 8 cyl, Auto 3-spd3
1986161520Diplomat, 5.2 L, 8 cyl, Auto 3-spd3
1985171520Diplomat, 5.2 L, 8 cyl, Auto 3-spd3
1984151418Diplomat, 5.2 L, 8 cyl, Auto 3-spd3

Every Dodge Diplomat trim

YearTrimEngineTransmissionDriveFuelCityHwyCombCO2 g/miFuel cost/yr
1989Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium152017523$4,840
1989Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium131714635$5,880
1989Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium111412741$6,860
1988Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium162118494$4,580
1988Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium141815592$5,490
1988Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium111412741$6,860
1987Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium152017523$4,840
1987Diplomat5.2 L, 8 cylAuto 3-spdRWDRegular131614635$4,800
1987Diplomat5.2 L, 8 cylAuto 3-spdRWDRegular111412741$5,600
1986Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium152016555$5,150
1986Diplomat5.2 L, 8 cylAuto 3-spdRWDRegular141615592$4,480
1986Diplomat5.2 L, 8 cylAuto 3-spdRWDRegular111412741$5,600
1985Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium152017523$4,840
1985Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium151916555$5,150
1985Diplomat5.2 L, 8 cylAuto 3-spdRWDPremium111412741$6,860
1984Diplomat5.2 L, 8 cylAuto 3-spdRegular141815592$4,480
1984Diplomat5.2 L, 8 cylAuto 3-spdRegular141815592$4,480
1984Diplomat5.2 L, 8 cylAuto 3-spdRegular121513684$5,170

CO2 is tailpipe grams per mile from the EPA test. Fuel cost per year uses the prices and miles in the calculator above (the EPA's own prices and 15,000 miles a year until you change them); blank when the fuel has no price here (hydrogen, natural gas).

Compare with other 1989 Midsize Cars

VehicleCombinedCityHwy
1989 Chevrolet Corsica252131
1989 Chrysler LeBaron GTS252131
1989 Dodge Aries252231
1989 Dodge Lancer252131
1989 Plymouth Reliant252231
1989 Dodge Spirit242131

All Midsize Cars ranked by MPG

Questions people ask

What is the best MPG for a Dodge Diplomat?

The most efficient Dodge Diplomat the EPA has rated is the 1988 Diplomat at 18 MPG combined (16 city, 21 highway).

What MPG does the 1989 Dodge Diplomat get?

1989 Dodge Diplomat trims range from 12 to 17 MPG combined, depending on engine, transmission and drivetrain.

Which Dodge Diplomat has the worst fuel economy?

The 1989 Diplomat is the lowest rated at 12 MPG combined.

How much does it cost to fuel a Dodge Diplomat for a year?

At $5.49 a gallon for premium and 15,000 miles a year, the cheapest 1989 Dodge Diplomat to fuel is the Diplomat, 5.2 L, 8 cyl (17 MPG) at $4,840 a year. The Diplomat, 5.2 L, 8 cyl (12 MPG) costs $6,860, so the thriftier trim saves $2,020 a year and $10,100 over five years.

More from Dodge: every Dodge model. Fuel types on this model: Premium, Regular. EPA classes: Midsize Cars.