1984 Dodge Diplomat
US · Midsize Cars
The 1984 Dodge Diplomat is listed in the US market with gasoline power. Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.
- Engine
- Varies by configuration: 5.2L 8-cylinder (FFS), 5.2L 8-cylinder (GUZZLER), 5.2L 8-cylinder (FFS) CA model)
- Transmission
- 3-speed automatic
- Fuel
- Gasoline
- Economy
- 13 mpg (18.1 L/100 km) to 15 mpg (15.7 L/100 km) combined
Key Figures
Engine
| Specification | Value | Source |
|---|---|---|
| Engine | Varies by configuration: 5.2L 8-cylinder (FFS), 5.2L 8-cylinder (GUZZLER), 5.2L 8-cylinder (FFS) CA model) | |
| Displacement | 5.2 L | |
| Cylinders | 8 | |
| Fuel type | Gasoline | EPA fueleconomy.gov |
Transmission and drivetrain
| Specification | Value | Source |
|---|---|---|
| Transmission | Automatic | EPA fueleconomy.gov |
| Gears | 3 |
Fuel economy and range
| Specification | Value | Source |
|---|---|---|
| Combined | 13 mpg (18.1 L/100 km) to 15 mpg (15.7 L/100 km) | EPA fueleconomy.gov |
| City | 12 mpg (19.6 L/100 km) to 14 mpg (16.8 L/100 km) | |
| Highway | 15 mpg (15.7 L/100 km) to 18 mpg (13.1 L/100 km) |
Our sources do not publish these for this vehicle: Aspiration, Power, Torque, Drivetrain, Electric range, Battery capacity. We leave them out instead of estimating.
Trims and configurations
3 configurations listed by our sources. Engines, drivetrains and fuel economy can differ between them.
Recalls
No recall campaigns were found in NHTSA data at the last check. Last checked November 9, 2026.
Data sources
- EPA fueleconomy.gov · retrieved October 25, 2026 · US Government public data
- NHTSA vPIC · retrieved October 25, 2026 · US Government public data
Source checked: October 25, 2026
Data verified: October 25, 2026
Specifications can vary by market, trim, configuration and production date. Confirm with the manufacturer before buying parts or making safety decisions. Report an error.
Related vehicles
- 1985 Dodge Diplomat
Gasoline
Varies by configuration: 5.2L 8-cylinder ((FFS) CA model), 5.2L 8-cylinder ((FFS)), 5.2L 8-cylinder ((POLICE) (FFS)) · RWD
17 mpg (13.8 L/100 km) to 12 mpg (19.6 L/100 km)
Frequently asked questions
What engine does the 1984 Dodge Diplomat have?
Varies by configuration: 5.2L 8-cylinder ((FFS)), 5.2L 8-cylinder ((GUZZLER)), 5.2L 8-cylinder ((FFS) CA model). Engines can differ by trim, so check the trim list below.
What is the fuel economy of the 1984 Dodge Diplomat?
Combined fuel economy is 13 mpg (18.1 L/100 km) to 15 mpg (15.7 L/100 km), as published by the source shown in the specification table.
Are there recalls for the 1984 Dodge Diplomat?
No recall campaigns were found in NHTSA data when we last checked on November 9, 2026. Recall status can change, so confirm with NHTSA or the manufacturer.