December 5, 2025
Modern vehicles utilize numerous bulbs for various functions - from headlights and fog lamps to interior dome lights and turn signals. Using incorrect bulb types can compromise lighting performance, potentially creating hazardous driving conditions. This guide organizes bulb specifications by model year and lighting component.
This guide applies specifically to Volkswagen Jetta models with original equipment manufacturer (OEM) lighting components. Vehicles with aftermarket lighting systems may require different bulb types. Always verify bulb specifications before purchasing replacements.
While this guide provides comprehensive coverage of standard bulb types, minor variations may exist between specific trims or regional models. For precise compatibility, consult your vehicle's owner manual or a certified Volkswagen service center.