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When shopping for a capable SUV that doesn't sacrifice efficiency at the pump, GMC offers an impressive lineup to consider. Whether you need a compact crossover for daily commuting or a full-size SUV for family adventures, understanding fuel economy ratings can help you make the best decision. Drivers in Sumter, SC appreciate having options that balance performance with efficiency. Let's explore the GMC SUV lineup ranked from most to least fuel efficient.

The 2025 GMC Hummer EV Pickup 3X represents a groundbreaking fusion of legendary off-road capability and trailblazing electric technology. This revolutionary electric truck doesn't just challenge conventional pickup expectations—it completely redefines them. With its lengthy driving range, innovative features, and substantial tax advantages for business owners, the Hummer EV Pickup 3X is one of the most compelling electric vehicles on the market.