2020 GMC Sierra 4WD AT4

3.0L 6-cyl · 10-speed automatic · 4WD

DieselDieselStandard Pickup Trucks 4WD

Official EPA record #41856 from FuelEconomy.gov · data 2026-07-26 · every assumption below is yours to edit. How this is computed

Per month

$217.04

Per year

$2,604

Per mile

21.7¢/mi

5-year total

$13,020

pickup body style — not this exact model

Notes & official EPA estimate

507.7 gal of fuel / yeardiesel @ $5.13/galAt $6.13/gal: $259.35/mo

A mile road trip costs about $65.10 in energy.

Official FuelEconomy.gov estimate: $3,250/year — assumes 15,000 miles/year and EPA price assumptions. The figures above use your inputs instead.

Compare with another vehiclePrices: EPA national averages, Jul 24, 2026 — override anytime.

At 12,000 miles per year (55% city / 45% highway) with EPA national-average prices ($5.13/gal diesel), this 2020 GMC Sierra 4WD AT4 costs about $217.04 per month in diesel — $2,604 per year, 21.7¢/mi, $13,020 over five years.Assumptions are editable below. Prices as of July 24, 2026 · EPA vehicle record #41856. EPA figures are laboratory estimates; real-world cost varies with driving conditions, weather, and where you buy energy.

GMC Sierra: running costs for every model year →

Official EPA efficiency

Measure	Value
City MPG	22
Highway MPG	26
Combined MPG	24

Official EPA estimates

Estimate	Value
Official annual fuel cost (15,000 mi/yr)	$3,250/yr
Tailpipe CO₂	427 g/mi
EPA greenhouse gas score	4/10
EPA smog rating (Federal Tier 3 Bin 160)	1/10

Source: U.S. EPA / DOE FuelEconomy.gov, vehicle record #41856 (record updated 2020-05-27). Snapshot processed 2026-07-26; page data last changed 2020-05-27.

View this record on FuelEconomy.gov — includes owner-shared real-world MPG for this vehicle.

Related configurations

Same year, same family

Adjacent model years