2018 GMC Yukon C1500 2WD MPG & Specs — Real-World vs EPA, All Trims
It depends on the trim. Some versions take premium and some take regular — check your exact engine/transmission below.
Is the 2018 GMC Yukon C1500 2WD good on gas?
At up to 19 MPG combined, the 2018 GMC Yukon C1500 2WD is about average for a Standard Sport Utility Vehicle 2WD — that class averages about 19.7 MPG across 568 EPA-tested versions, so it's middle-of-the-road for its size.
Real-world MPG vs the EPA number
The EPA figures above come from a standardized dynamometer test, not the open road — real-world MPG typically runs a bit lower depending on your driving, climate and terrain. That's true of every car on this site, old or new.
At today's AAA national average price — $3.80/gal for regular gas as of 2026-07-05 — the most efficient trim runs about $3,000/year (roughly $250/month, about $20.00 per 100 miles) at the EPA's assumed 15,000 miles/year, using an estimated 789 gallons a year. We don't estimate a cost-per-fill since exact tank size isn't in the public EPA dataset, but the per-100-mile figure scales to any tank. Current national average gas prices →
2018 GMC Yukon C1500 2WD trims & fuel economy
| Trim (engine / transmission) | Fuel | MPG | Fuel/yr (today's price) |
|---|---|---|---|
| 5.3L 8-cyl, Automatic 6-spd, RWD | REGULAR | 19 | $3,000 |
| 5.3L 8-cyl, Automatic 6-spd, RWD | FLEX-FUEL | 19 | $3,300 |
| 6.2L 8-cyl, Automatic 10-spd, RWD | PREMIUM | 17 | $4,129 |
2018 GMC Yukon C1500 2WD specs
What the EPA test-car listings record for this model year — every combination sold is a row in the trims table above.
| Engine options | 5.3L 8-cyl · 6.2L 8-cyl |
| Transmission | Automatic 6-spd · Automatic 10-spd |
| Drive type | RWD |
| EPA body class | Standard Sport Utility Vehicle 2WD |
| Fuel | Varies by trim |
| Tailpipe CO₂ | 468–517 g/mi |
Other years of the GMC Yukon C1500 2WD
Similar cars (Standard Sport Utility Vehicle 2WD)
Cars that take premium · Cheapest cars to fuel · Where fuel grade depends on the trim · Fuel guides
3 trim(s) · EPA FuelEconomy.gov data retrieved 2026-07-24 · fuel prices AAA national average as of 2026-07-05.