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2026 GMC Sierra 1500 Review

Half-ton GMC with published 2026 EPA engine ladder. Max tow/payload withheld pending OEM trailering primary. Axis scores pending.

2026 · James Calder · published 2026-10-07

2026 GMC Sierra 1500

Sierra 1500 is GMC's half-ton against Silverado and F-150 — often positioned as the more premium twin to Chevy. Trade-offs: fuel cost and configuration literacy.

What's confirmed (EPA 2026)

EPA Sierra rows span a wide band; representative combined figures from the 2026 model page include values from the mid-teens to mid-20s depending on engine/drivetrain (examples in the fetched set include about 15–25 mpg combined). Match the exact EPA vehicle string (engine, 2WD/4WD, cab) before comparing.

Practical notes

Diesel and turbo-four paths usually lead efficiency; performance and heavy packages trail. Max tow/payload: publish only from GMC/GM OEM trailering guides for 2026 — secondary reprints are not enough under accuracy gates.

Safety

Score pending / ratings not confirmed for 2026 Sierra 1500 on NHTSA/IIHS in this pass.

Method

See [How we score](/method).

Sources

  • EPA — Gas Mileage of 2026 GMC Sierra — https://www.fueleconomy.gov/feg/bymodel/2026GMCSierra.shtml (fetched 2026-10-06)
  • GMC — Sierra 1500 — https://www.gmc.com/trucks/sierra/1500 (OEM; verify MY)

Related: Rankings · GMC