Buick · 1984–1985 · Diesel
Buick Century Diesel MPG by year
The EPA has rated 2 model years of the Buick Century Diesel, from 1984 to 1985. The most fuel-efficient year is the 1985, at 27 MPG combined in its best configuration. The best 1985 model is 8% more efficient than the best 1984 model (27 vs. 25 MPG). The 1985 model is 35% more efficient than the median midsize car that year (27 vs. 20 MPG).
Combined MPG by model year
- Century Diesel, 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 Century Diesel model year
| Year | Type | Best combined | City / Hwy | Class median | Range | Configs | Fuel / yr |
|---|---|---|---|---|---|---|---|
| 1985 | Diesel | 27 MPG lowest 26 |
23 / 32 | 20 | — | 2 | $2,056 |
| 1984 | Diesel | 25 MPG lowest 24 |
21 / 31 | 21 | — | 3 | $2,220 |
Fuel cost uses today's default prices for every year so model years compare like for like. Sort any column.
Compare Century Diesel model years
See how much a newer Century Diesel would save over an older one.
Models similar to the Buick Century Diesel
Other Buick Century versions
Frequently asked questions
Which Buick Century Diesel year has the best fuel economy?
The 1985 Buick Century Diesel, rated up to 27 MPG combined. At 15,000 miles a year with $3.70/gal diesel fuel, that works out to about $2,056 a year.
Which Buick Century Diesel year has the worst fuel economy?
The 1984 model, whose most efficient version is rated 25 MPG combined (about $2,220 a year to fuel).
What is the fuel economy of the latest Buick Century Diesel?
The 1985 Buick Century Diesel is rated up to 27 MPG combined.