Toyota Prius Fog Light Bulb Size

Additional Notes

• The Toyota Prius front fog light specifications cover three distinct bulb types across the 2004-2015 model years: the 9006, H11, and H16, all of which are single-filament halogen bulbs operating at 12 volts.
• The 9006 bulb follows the ANSI standard, which governs bulb specifications in the US and Canada. It uses a P22d base and draws 55 watts, making it the highest-wattage option among the three types listed.
• The H11 follows the ECE standard, which applies across Europe and worldwide markets, and carries additional approval for use in the US. It uses a PGJ19-2 base and also operates at 55 watts.
• The H16 is also an ECE-standard bulb with a PGJ19-3 base, but it draws only 19 watts, significantly lower than both the 9006 and H11. Despite sharing a similar physical form with the H11, the different base designation (PGJ19-3 versus PGJ19-2) means the two are not interchangeable.
• The Toyota Prius used the 9006 bulb for front fog lights across the 2004-2009 model years, representing the longest continuous fitment period among the three bulb types in these specifications.
• The 2010-2011 Prius models transitioned to the H11 bulb, which shares the same 55-watt output as the 9006 but conforms to ECE rather than ANSI standards and uses a different base type, making cross-substitution between the two inadvisable without verification.
• The 2012-2015 Prius models use the H16 bulb, which, while visually similar to the H11 and sharing the same ECE origin, operates at a substantially lower wattage and has a distinct base that prevents direct substitution with H11 units.
• All three bulb types in these specifications are rated at 12 volts, consistent with standard automotive electrical systems, though their wattage and base configurations differ in ways that affect fitment compatibility across model years.