2004 Pontiac Bonneville

Full-Size Sedan Regular
Pontiac Bonneville 2004
21MPG Combined
3 Trims
← 2003 2004 2005 →
Updated February 27, 2026

The 2004 Pontiac Bonneville Full-Size Sedan provides 18–21 combined MPG depending on trim. We’ve compiled EPA fuel economy data, NHTSA safety ratings, and recall history so you can make an informed decision.

2004 Pontiac Bonneville Specifications

SpecValue
Combined MPG18–21 combined MPG depending on trim
City MPG18
Highway MPG27
Body StyleFull-Size Sedan
Fuel TypeRegular
DriveFWD
Available Trims3

Available Trims

TrimMPG (City/Hwy/Combined)EngineTransmission
Auto18/27/213.8L 6cylAutomatic 4-spd
Auto16/26/203.8L 6cylAutomatic 4-spd
Auto15/22/184.6L 8cylAutomatic 4-spd

Annual Fuel Cost

Based on EPA estimates, the 2004 Pontiac Bonneville costs approximately $2,483 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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