Dodge · 1984–1989 · Gas
Dodge Diplomat MPG by year
The EPA has rated 6 model years of the Dodge Diplomat, from 1984 to 1989. The most fuel-efficient year is the 1986, at 15 MPG combined in its best configuration. The best 1989 model is 13% more efficient than the best 1984 model (17 vs. 15 MPG). The 1989 model is 17% less efficient than the median midsize car that year (17 vs. 20.5 MPG).
Combined MPG by model year
- Diplomat, most efficient version
- Range across configurations
- Class median
Shaded band: range across that year's configurations. Class median: same-year models in the same class, rated in MPG. Click a point to open that model year; the table below lists every value.
Every Diplomat model year
| Year | Type | Best combined | City / Hwy | Class median | Range | Configs | Fuel / yr |
|---|---|---|---|---|---|---|---|
| 1989 | Gas | 17 MPG lowest 12 |
15 / 20 | 20.5 | — | 3 | $3,485 |
| 1988 | Gas | 18 MPG lowest 12 |
16 / 21 | 20 | — | 3 | $3,292 |
| 1987 | Gas | 14 MPG lowest 12 |
13 / 16 | 19 | — | 3 | $3,321 |
| 1986 | Gas | 15 MPG lowest 12 |
14 / 16 | 19 | — | 3 | $3,100 |
| 1985 | Gas | 17 MPG lowest 12 |
15 / 20 | 20 | — | 3 | $3,485 |
| 1984 | Gas | 15 MPG lowest 13 |
14 / 18 | 21 | — | 2 | $3,100 |
Fuel cost uses today's default prices for every year so model years compare like for like. Sort any column.
Compare Diplomat model years
See how much a newer Diplomat would save over an older one.
Models similar to the Dodge Diplomat
Frequently asked questions
Which Dodge Diplomat year has the best fuel economy?
The 1986 Dodge Diplomat, rated up to 15 MPG combined. At 15,000 miles a year with $3.10/gal regular gas, that works out to about $3,100 a year.
Which Dodge Diplomat year has the worst fuel economy?
The 1985 model, whose most efficient version is rated 17 MPG combined (about $3,485 a year to fuel).
What is the fuel economy of the latest Dodge Diplomat?
The 1989 Dodge Diplomat is rated up to 17 MPG combined.