Diesel full-size SUVs for 2026: Suburban, Tahoe and Yukon compared

In North America, diesel fell out of favor for sedans and crossovers long ago, yet it still makes sense in the full-size SUV arena: ample torque, relaxed fuel use on the highway, and assured towing. For 2025–2026, the diesel story in this class largely revolves around a single GM engine—the 3.0-liter inline Duramax rated at 305 hp. For big family haulers and long-distance trailers, that recipe still fits the brief.

The 2026 Chevrolet Suburban with this diesel starts at about $74,490, returns around 10.5 L/100 km, and tows up to 3,700 kg. The 2026 Tahoe is shorter and lighter, posting 10.2 L/100 km and up to 3,720 kg of towing, with Super Cruise available on the options list. In practice, the Tahoe comes across as the efficiency play, while that slight towing bump—though modest—won’t go unnoticed by buyers with heavy gear.

Over at GMC, the roles are similar: the 2026 Yukon offers the same Duramax across all trims, with the same fuel economy and up to 3,670 kg of towing. The long-wheelbase 2026 Yukon XL costs more and leans more premium in presentation, but its rated towing is lower—about 3,590 kg with the same fuel consumption. It effectively trades a bit of tow headroom for added space and polish, a familiar trade-off for extended models.

There’s also the Mercedes-Benz Sprinter 4x4. Technically not an SUV, it’s often chosen instead for travel and work. Its 2.0-liter diesel comes in two tunes (170/295 or 211/332), with a claimed towing capacity of up to 3,400 kg. Fuel economy isn’t published due to its different weight class, but for buyers blending adventure and utility, the Sprinter’s formula explains why it so often stands in for a traditional SUV.