2026 Chevrolet Silverado 1500 (light-duty pickup) — they vary by engine, trim, and drivetrain: 

🔹 Standard Gas & 2.7 L Turbo I-4 (most trims)

2-Wheel Drive (2WD):

• City: ~18 mpg

• Highway: ~21 mpg

• Combined: ~19 mpg 

Four-Wheel Drive (4WD):

• City: ~17 mpg

• Highway: ~20 mpg

• Combined: ~18 mpg 

🔹 Trail Boss / Off-Road Configurations

• Custom Trail Boss (4WD): ~16 city / 17 hwy mpg

• LT Trail Boss (4WD): ~17 city / 20 hwy mpg 

🔹 Higher-Trim Gas Engines (V8)

• LTZ (2WD): ~16 city / 21 hwy mpg

• LTZ (4WD): ~16 city / 19 hwy mpg

• High Country (2WD): ~16 city / 21 hwy mpg

• High Country (4WD): ~16 city / 19 hwy mpg 

🔹 Performance / Special (ZR2)

• ZR2 (4WD): ~20 mpg city / 23 mpg highway — diesel option on this trim yields best overall mpg of ~21 combined. 

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📌 What This Means

• The most common Silverado configurations with the 2.7-liter turbo engine get ~18–21 mpg on the highway and ~17–18 mpg in city driving for 4WD models, with slightly higher numbers in 2WD. 

• Higher-trim V8 versions (like LTZ or High Country) trade efficiency for power — highway can still reach ~21 mpg, but city stays in the mid-teens. 

• The ZR2 with the diesel powertrain is one of the most efficient Silverado 1500 configurations, returning ~20/23 mpg city/highway. 

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🚚 Quick Fuel Economy Summary

(City/highway mpg values are EPA estimates and can vary based on cab size, bed length, tires, and equipment. Real-world results often differ due to load, driving style, and terrain.) 

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If you’d like, I can also give you estimated driving range per tank for these mpg numbers based on the Silverado’s fuel tank capacity!