2003 Chevrolet Avalanche 1500

SUV Regular
Chevrolet Avalanche 1500 2003
14MPG Combined
6 Trims
← 2002 2003 2004 →
Updated February 27, 2026

Get the full picture on the 2003 Chevrolet Avalanche 1500. As a SUV, it achieves 13–14 combined MPG depending on trim and has not yet been rated by NHTSA. Below you’ll find detailed specs for every trim, plus recall information and competitor comparisons.

2003 Chevrolet Avalanche 1500 Specifications

SpecValue
Combined MPG13–14 combined MPG depending on trim
City MPG13
Highway MPG17
Body StyleSUV
Fuel TypeRegular
DriveRWD
Available Trims6

Available Trims

TrimMPG (City/Hwy/Combined)EngineTransmission
Auto12/17/145.3L 8cylAutomatic 4-spd
Auto13/17/145.3L 8cylAutomatic 4-spd
Auto12/16/135.3L 8cylAutomatic 4-spd
Auto13/17/145.3L 8cylAutomatic 4-spd
Auto12/16/135.3L 8cylAutomatic 4-spd
Auto13/17/145.3L 8cylAutomatic 4-spd

Annual Fuel Cost

Based on EPA estimates, the 2003 Chevrolet Avalanche 1500 costs approximately $3,233 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

Compare the 2003 Chevrolet Avalanche 1500

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Other Model Years

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