Chevrolet · 1984–1988 · Diesel

Chevrolet K20 Pickup Diesel MPG by year

The EPA has rated 4 model years of the Chevrolet K20 Pickup Diesel, from 1984 to 1988. The most fuel-efficient year is the 1984, at 18 MPG combined in its best configuration. The best 1988 model is 6% less efficient than the best 1984 model (17 vs. 18 MPG). The 1988 model is about as efficient as the median full-size pickup (17 MPG).

Most efficient year198418 MPG combined
Latest (1988)17 MPG$3,265/yr to fuel
First rated (1984)18 MPG$3,083/yr at today's prices
Model years rated49 configurations

Combined MPG by model year

  • K20 Pickup 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 K20 Pickup Diesel model year

YearTypeBest combinedCity / HwyClass medianRangeConfigsFuel / yr
1988 Diesel 17 MPG
lowest 16
15 / 20 17 — 2 $3,265
1986 Diesel 17 MPG
lowest 16
15 / 20 17 — 2 $3,265
1985 Diesel 17 MPG
lowest 15
15 / 20 16 — 2 $3,265
1984 Diesel 18 MPG
lowest 17
16 / 20 17 — 3 $3,083

Fuel cost uses today's default prices for every year so model years compare like for like. Sort any column.

Compare K20 Pickup Diesel model years

See how much a newer K20 Pickup Diesel would save over an older one.

Models similar to the Chevrolet K20 Pickup Diesel

Other Chevrolet K20 Pickup versions

Frequently asked questions

Which Chevrolet K20 Pickup Diesel year has the best fuel economy?

The 1984 Chevrolet K20 Pickup Diesel, rated up to 18 MPG combined. At 15,000 miles a year with $3.70/gal diesel fuel, that works out to about $3,083 a year.

Which Chevrolet K20 Pickup Diesel year has the worst fuel economy?

The 1986 model, whose most efficient version is rated 17 MPG combined (about $3,265 a year to fuel).

What is the fuel economy of the latest Chevrolet K20 Pickup Diesel?

The 1988 Chevrolet K20 Pickup Diesel is rated up to 17 MPG combined.

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