The 2006 Pontiac G6 offered two engine sizes: a 2.4-liter inline-four and an optional 3.5-liter V6; base models used the 2.4L and higher trims offered the 3.5L.
In detail, the 2.4-liter Ecotec four-cylinder was the standard engine, emphasizing efficiency, while a 3.5-liter V6 was available on higher-trim models for those seeking more power and smoother mid-range performance across the G6 lineup.
Engine options
Engine sizes available for the 2006 G6, regardless of body style, were two distinct displacements that defined the driving experience for that model year.
- 2.4-liter inline-four (Ecotec)
- 3.5-liter V6
Those two options summarize Pontiac's approach for the G6 in 2006: a standard, efficient four-cylinder paired with a more capable V6 option for buyers who wanted extra power.
Summary
Conclusion: The 2006 Pontiac G6 was offered with two engine sizes: a 2.4L inline-four and an optional 3.5L V6. Base models used the 2.4L; higher trims offered the 3.5L to boost performance. This configuration provided a balance between fuel economy and performance across the model range.