2021 GMC Yukon XL EPA Fuel Economy Summary

The 2021 GMC Yukon XL delivers an EPA-certified 16–23 MPG combined (13–21 city / 19–27 highway depending on engine and drivetrain) across 10 configurations. Estimated annual fuel costs range from $3,400 to $4,750.

Combined MPG
16–23 MPG
55% city / 45% highway weighted
City MPG
13–21 MPG
Stop-and-go urban cycle
Highway MPG
19–27 MPG
Sustained open-highway test
Annual Fuel Cost
$3,400–4,750
EPA estimate @ 15,000 miles/yr

Official EPA Fuel Economy Ratings by Configuration (10 Variants)

Laboratory certification test values across engine, transmission, and drivetrain permutations

Configuration / Model Powertrain Drivetrain Transmission City Highway Combined Annual Fuel Cost CO2 (g/mi)
Yukon XL 2WD Diesel 3L Turbo-Diesel Rear-Wheel Drive Automatic 10-spd 21 MPG 27 MPG 23 MPG $3,450 —
Yukon XL 4WD Diesel 3L Turbo-Diesel 4-Wheel Drive Automatic 10-spd 20 MPG 26 MPG 22 MPG $3,600 —
Yukon XL 2WD Regular 5.3L 8-Cyl Gas Rear-Wheel Drive Automatic 10-spd 16 MPG 20 MPG 18 MPG $3,400 —
Yukon XL 4WD Regular 5.3L 8-Cyl Gas 4-Wheel Drive Automatic 10-spd 15 MPG 19 MPG 17 MPG $3,600 —
Yukon XL 2WD Regular 5.3L 8-Cyl Gas Rear-Wheel Drive Automatic 10-spd 15 MPG 20 MPG 17 MPG $3,600 —
Yukon XL 2WD Premium 6.2L 8-Cyl Gas Rear-Wheel Drive Automatic 10-spd 14 MPG 20 MPG 16 MPG $4,750 —
Yukon XL 4WD Premium 6.2L 8-Cyl Gas 4-Wheel Drive Automatic 10-spd 14 MPG 19 MPG 16 MPG $4,750 —
Yukon XL 2WD Premium 6.2L 8-Cyl Gas Rear-Wheel Drive Automatic 10-spd 14 MPG 20 MPG 16 MPG $4,750 —
Yukon XL 4WD Premium 6.2L 8-Cyl Gas 4-Wheel Drive Automatic 10-spd 13 MPG 19 MPG 16 MPG $4,750 —
Yukon XL 4WD Regular 5.3L 8-Cyl Gas 4-Wheel Drive Automatic 10-spd 15 MPG 19 MPG 16 MPG $3,850 —
EPA Test Methodology: Fuel economy estimates are determined by vehicle manufacturers in accordance with EPA regulations (40 CFR Part 600) and verified by EPA laboratories. Estimates assume 15,000 miles per year of driving (55% city, 45% highway) at prevailing fuel and electricity prices.

Deterministic Fuel Cost & Consumption Benchmarks

Standardized annual energy consumption and operating cost metrics based on 15,000 annual miles

Fuel Cost per 25 Miles

$3.80–$5.47

Based on $3.50 per gallon regular gasoline

Annual Fuel Consumption

652–938 Gallons

Estimated annual energy units needed for 15,000 miles

5-Year Fuel Cost vs Avg Vehicle

Official EPA Benchmark

Compared to the average new vehicle over 5 years

Related Official Reports for 2021 GMC Yukon XL

Cross-reference safety ratings, owner defect complaints, and recall campaigns

Official US Government Data Provenance

Fuel economy ratings, electric range figures, and energy cost estimates on this page are retrieved directly from the United States Environmental Protection Agency (EPA) and U.S. Department of Energy (FuelEconomy.gov) certified vehicle database.

Local Production Store Compiled: August 2026 • Deterministic Audited Dataset • Zero Dynamic External API Runtime Latency.